C222123232321333131133133313331323133313231333133323311322221221221   >>    C22212323232133313113313331333132313331323133313332331132222122122   <<    C222123232321333131133133313331323133313231333133323311322221221223   >>      C222123232321333131133133313331323133313231333133323311322221221222   >>