C1111233131211111211113313331333133313331322322331312111113231311321   >>    C111123313121111121111331333133313331333132232233131211111323131132   <<    C1111233131211111211113313331333133313331322322331312111113231311323   >>      C1111233131211111211113313331333133313331322322331312111113231311322   >>