C222123232321333131133133313331323133313231333133312131323312231231221   >>    C22212323232133313113313331333132313331323133313331213132331223123122   <<    C222123232321333131133133313331323133313231333133312131323312231231223   >>      C222123232321333131133133313331323133313231333133312131323312231231222   >>