Grammar Mistakes?

1b00Any grammar mistakes in the following text?02b02br
02br
00He repeats the third line in order to imprint it on the reader’s memory, as well as to foreground the presence of a non-literal meaning, but not the meaning itself. In other words, the repetition gives the reader of the poem the opportunity to go beyond the literal into the figurative. Furthermore, the poem has a strict rhyme scheme. The first three stanzas go: aaba bbcb ccdc. Three lines rhyme; the line that doesn't rhyme provides the rhyme for the next stanza. There are just enough stanzas to establish a pattern. The fourth stanza is the last. Since there is no stanza after the last one, the third line cannot have a none-rhyming line. Now, instead of having just three lines, or just four rhyming lines, the poet chose to repeat the last line. This gives a powerful feeling of "closure"; not only is there no new rhyme, there isn't even a new line. The first "sleep" disrupts the expectation (we would expect a non-rhyming line); the repetition wraps up the poem. 0-