C222123232321333131133133313331323133313231333133312131323232312121   >>    C22212323232133313113313331333132313331323133313331213132323231212   <<    C222123232321333131133133313331323133313231333133312131323232312123   >>      C222123232321333131133133313331323133313231333133312131323232312122   >>