. A rhyme scheme is the pattern of rhyme between lines of a poem or song. It is usually referred to by using letters to indicate which lines rhyme. In other words, it is the pattern of end rhymes or lines. A rhyme scheme gives the scheme of the rhyme; a regular pattern of rhyming words in a poem (the end words).
Bid me to weep, and I will weep A
While I have eyes to see; B
And having none, and yet I will keep A
A heart to weep for thee. B