C22212323232133313113313331333132313331323331123231323323211221311331221   >>    C2221232323213331311331333133313231333132333112323132332321122131133122   <<    C22212323232133313113313331333132313331323331123231323323211221311331223   >>      C22212323232133313113313331333132313331323331123231323323211221311331222   >>