C22212323232133313113313331333132313331323132323131232322131313211   >>    C2221232323213331311331333133313231333132313232313123232213131321   <<    C22212323232133313113313331333132313331323132323131232322131313213   >>      C22212323232133313113313331333132313331323132323131232322131313212   >>