The rhyme scheme in the poem is: a b b a a b b a c d e c d e.
There is no end couplet, which makes this poem a Petrarchan sonnet.
Petrarchan sonnet consists of fourteen lines, the first eight lines (also called octave) follow the scheme: a b b a a b b a, and the rhyme scheme of the following six lines (also called sestet) may vary.