You -- This is from the second-person, plural form of the verb.

heard -- "Heard" is from a Greek verb that means "to hear" and "to listen." It has the same sense as the English not only of listening but of understanding.   It also means "to listen" and "to understand," but amusingly, it also means "to be silent." The accusative object is the person/thing heard about, while the genitive is the person/thing heard from.  However, two genitives can be used with the sense of "hear of a thing from a person."

missing "that"  -- (MW) The untranslated word "that" introduces a statement of fact or cause, "for what," "because," "since," and "wherefore."

me   -- (WF) The pronoun "I" is used here. Since the subject of the sentence is part of the verb, its explicit use accentuates who is speaking "I." Saying "I myself" captures this feeling in English. This is not an object of the verb, but the subject.

missing "myself" -- (MW)  The subjective pronoun repeats the information in the verb so it should be repeated in English like "I myself."

say - The word translated as "said" means "to say" and "to speak." It is one of the two most common words translated "speak," "say" and "tell," but it has more a sense of addressing and proclaiming.

missing "to you"  -- (MW) The untranslated word "to you" here is plural and in the form of an indirect object, "to you," "for you," etc.

I -- This is from the first-person, singular form of the verb.

am -- This helping verb indicates the present tense of the verb. It is used here to form the present, progressive tense, which doesn't exist in Greek but which can smooth the flow of English sentences.

going away, -- "Going away" is a Greek verb that means literally "go under" or "bring under," and Jesus uses it to mean "go away" and "depart."

and -- The Greek word translated as "and" is used as the conjunction "and," but it also is used to add emphasis ("also"). In a series, it is can be translated as "not only...but also." After words implying sameness "as."

I -- This is from the first-person, singular form of the verb.

am -- This helping verb indicates the present tense of the verb. It is used here to form the present, progressive tense, which doesn't exist in Greek but which can smooth the flow of English sentences.

coming -- The word translated as "come" primarily means "to start out" but Christ usually uses it to mean "come" but not always. It indicates movement, especially its beginning, without indicating a direction toward or away from anything, so it works either as "start," "come," or "go," but it is more like our phrase "being underway." Our English word "show up" captures both the "start" and "come" ideas. See this article for more.

back -- (IW) There is nothing that can be translated as "again" in the Greek source.

to -- The word translated as "unto" means "towards," "by reason of (for)," "before" both in time and place, "in the presence of," "against," and several other types of "before." With verbs of seeing it specifically means "towards." This is not the word form translated as "unto" above.

you. -- The "you" here is the second-person, plural pronoun in the form of an object of the action or preposition. As the object of a preposition, an accusative object indicates movement towards something or a position reached as a result of that movement.

If .-- (CW) The "if" here expresses a condition but it means nothing regarding whether that condition is met or not. It also means "if ever" and "whenever." However, when used as an "if" the verb is the subjunctive form of possibility.  When citing a fact with a declarative verb, indicative, instead of one of possibility, the sense is more "since" or "as sure as."

you -- This is from the second-person, plural form of the verb.

loved -- The word translated as "love" expresses a lot of different ideas including "to be fond of," "to greet with affection," "to persuade," and "to be contented with." Jesus however, applies it to relationships where we have a duty to care for others: family, God, etc. Another word, also translated as "love," is used to for relationships of affectionate friendship that are more voluntary. To distinguish this word, translating it as "cares for" seems to work best. See this article on love for more information.

me, -- "Me" is the regular first-person pronoun in Greek as the object of the verb or preposition. As the object of a preposition, an accusative object indicates movement towards something or a position reached as a result of that movement.

you  -- This is from the second-person, plural form of the verb.

would -- "Would" is a particle used with verbs to indicate that the action is limited by circumstances or defined by conditions. There is no exact equivalent in English but "possibly" is close. This word works similarly to the "might" or "should" of a subjunctive verb, but we don't want to confuse it with the subjunctive so using "possibly" provides a consistent translation.  This particle usually suggests the subjunctive form of the verb but can be used without it. The same Greek letters can also be the more common conjunction meaning "when," so this meaning comes from context.

be -- This helping verb "be" indicates that the verb is passive. Helping or auxiliary verbs are needed to translate the Greek verb forms into English.

glad , -- (WF) The Greek verb translated as "glad" is a verb means "rejoice," "take pleasure in," and "welcome." This verb, however, is passive so "be cheered."

that -- The word translated as "that" introduces a statement of fact or cause, "for what," "because," "since," and "wherefore." This is the word translated as "how" above.

I said, -- (OS) There is nothing in the Greek that can be translated as "I said" in the source we use today but it does exist in the source that the KJV translators used.

I -- This is from the first-person, singular form of the verb.

am -- This helping verb indicates the present tense of the verb. It is used here to form the present, progressive tense, which doesn't exist in Greek but which can smooth the flow of English sentences.

I -- This is from the first-person, singular form of the verb.

going -- The Greek verb translated as "going" is the most common verb translated as "go" in the NT. This word means "to lead over," "depart," and "to carry over." However, this word uniquely means "to pursue a course" and "to depart from life." In the active voice, it means "made to go" or "carried over" but in the passive or middle,its normal form, the subject is either being taken or taking himself and means "going," "crossing over," or "departing" more directly.

to --  The word translated as "to" means "towards," "by reason of (for)," "before" both in time and place, "in the presence of," "against," and several other types of "before." With verbs of seeing it specifically means "towards." This is not the word form initially translated as "unto" above, but it is the same the preposition translated as "unto" after that.

the   -- The word translated as "the" is the Greek definite article; without a noun, it has the sense of "the one." The Greek article is much closer to our demonstrative pronouns ("this," "that," "these," "those") than the English "the." See this article for more. 

Father: -- "Father" is the Greek noun that means "father" or any male ancestor so "forefathers." It is the word that Christ uses to address his own Father.

for -- The word translated as "for" introduces a statement of fact or cause, "for what," "because," "since," and "wherefore." This word is translated as "how" and "because" above.

the -- The word translated as "the" is the Greek definite article. When not preceding a noun, takes the meaning of "the one" or, in the plural, "the ones." The Greek article is much closer to our demonstrative pronouns ("this," "that," "these," "those") than the English "the." See this article for more. 

Father-- "Father" is the Greek noun that means "father" or any male ancestor so "forefathers." It is the word that Christ uses to address his own Father.

is -- The verb "is" here is the common form of "to be" in Greek. It means to have a certain characteristic or remain in a certain condition. It also equates terms or assigns characteristics. With the genitive object, the sense is "belongs to." The word also means "to exist" and where it doesn't connect to characteristics or conditions.

greater -- "Greater" is an adjective which is the comparative form of the word meaning "big" or "great." It means "bigger," "higher," "longer," "greater" and simply, "superior."

than -- This word "the"  comes from the genitive case of the following word that requires the addition of a preposition in English.  The most common is the "of" of possession. However, it means "than" in comparisons.

I. - (WF) "I" is the first-person possessive singular pronoun. This pronoun follows  a comparison so "than me." The subject "I" indicates "I am," which is not what the Greek says.