C11111333133313232233133313331333133313223322121111133313113123331   >>    C1111133313331323223313331333133313331322332212111113331311312333   <<    C11111333133313232233133313331333133313223322121111133313113123333   >>      C11111333133313232233133313331333133313223322121111133313113123332   >>