As it's formatted in the book, one section is:
If I could find the words in my mindThe words should explain, but the words won't comeIf you could see what you mean to meMy words should explain, but the words won't come
Semantically, the line "If you could see what you mean to me" seems isolated. ("My words should explain" follows it sequentially but not logically since the explaining words would precede the knowledge of "what you mean to me.") The line is a protasis without an accompanying apodosis, so even in the construction here, there's a lack of words ("the words won't come").