What is the rhyme scheme of the poem, "Power of Hope"?

The
rhyme scheme of this poem by Leonard Rebello is, as the previous educator said, irregular. For
the first half of the poem, he uses end rhyme in every other line, but does not repeat the same
rhyming sound, so we see: A B C B D E F E. Then, the amount of rhyme in the poem intensifies
somewhat, as we see a GHGH rhyme scheme appear, where the first line of this section rhymes with
the third, and the second line rhymes with the fourth. This happens only once, and then the poet
returns for four lines to the original poetic structure, where the second and fourth lines of
the quatrain rhyme, while the first and third do not. Finally, the poet employs an entirely
different kind of rhyme in his final quatrainin reality, not rhyme at all, but pararhyme or
assonance, where the vowel sound of a word is similar to that of the one with which it is
paired. In this case, there is assonance on "heart" and
"dark."