C11111333133313232233133313331333133313332313311211111311112311   >>    C1111133313331323223313331333133313331333231331121111131111231   <<    C11111333133313232233133313331333133313332313311211111311112313   >>      C11111333133313232233133313331333133313332313311211111311112312   >>