C1111233131211111211113313331333133313331322322331323131133132333221   >>    C111123313121111121111331333133313331333132232233132313113313233322   <<    C1111233131211111211113313331333133313331322322331323131133132333223   >>      C1111233131211111211113313331333133313331322322331323131133132333222   >>