C22212323232133313113313331333132313331323132323131232323311311   >>    C2221232323213331311331333133313231333132313232313123232331131   <<    C22212323232133313113313331333132313331323132323131232323311313   >>      C22212323232133313113313331333132313331323132323131232323311312   >>