#before :: after
AA      :: AA
AAAA    :: AAAA
AAAAAA  :: AAAAAA
AAAB    :: AAABAA  # need to insert "AAAB" above this line
AAAC    :: AAABAB
AAACAA  :: AAABABAA
AAAD    :: AAAD    # need to rename this to "AAAC"
AAAE    :: AAAE    # need to rename this to "AAAD"