C11111333133313232233133313331333133313233231331121111331311333121   >>    C1111133313331323223313331333133313331323323133112111133131133312   <<    C11111333133313232233133313331333133313233231331121111331311333123   >>      C11111333133313232233133313331333133313233231331121111331311333122   >>