C222123232321333131133133313331323133313231333133332231323211211   >>    C22212323232133313113313331333132313331323133313333223132321121   <<    C222123232321333131133133313331323133313231333133332231323211213   >>      C222123232321333131133133313331323133313231333133332231323211212   >>