C222123232321333131133133313331323133313231333133323311322222323221221   >>    C22212323232133313113313331333132313331323133313332331132222232322122   <<    C222123232321333131133133313331323133313231333133323311322222323221223   >>      C222123232321333131133133313331323133313231333133323311322222323221222   >>