C1111233131211111211113313331333133313331322322331312111133231311321   >>    C111123313121111121111331333133313331333132232233131211113323131132   <<    C1111233131211111211113313331333133313331322322331312111133231311323   >>      C1111233131211111211113313331333133313331322322331312111133231311322   >>