C22212323232133313113313331333132313331323132323131232323232223221   >>    C2221232323213331311331333133313231333132313232313123232323222322   <<    C22212323232133313113313331333132313331323132323131232323232223223   >>      C22212323232133313113313331333132313331323132323131232323232223222   >>