C222123232321333131133133313331323133313231333133323311322233332211   >>    C22212323232133313113313331333132313331323133313332331132223333221   <<    C222123232321333131133133313331323133313231333133323311322233332213   >>      C222123232321333131133133313331323133313231333133323311322233332212   >>