The rhyme scheme of Shakespeare' s sonnets is
AAABB CCDD EEFF GG.
BABCD ABCD ABCD GG.
CABBA CDDC EFFE GG.
DABAB CDCD EFEF GG.
AAABB CCDD EEFF GG.
BABCD ABCD ABCD GG.
CABBA CDDC EFFE GG.
DABAB CDCD EFEF GG.