C11111333133313232233133313331333131123313221211113313113313223211311   >>    C1111133313331323223313331333133313112331322121111331311331322321131   <<    C11111333133313232233133313331333131123313221211113313113313223211313   >>      C11111333133313232233133313331333131123313221211113313113313223211312   >>