In a poem with the rhyme scheme abcb, the second line rhymes with the fourth line, but the first and third lines don't rhyme with each other. ... Here's an example of an abcb rhyme scheme.
Correlating letters will rhyme so this rhyme scheme would go : Aaaaaaaa Bbbbbbbb Cccccccc Bbbbbbb A and C would not rhyme but the 2 B lines would. I hope this makes sense:)
