C11111333133313232233133313331333133313331312111113231333132212231   >>    C1111133313331323223313331333133313331333131211111323133313221223   <<    C11111333133313232233133313331333133313331312111113231333132212233   >>      C11111333133313232233133313331333133313331312111113231333132212232   >>