C11111333133313232233133313331333133313331113121111331323123131   >>    C1111133313331323223313331333133313331333111312111133132312313   <<    C11111333133313232233133313331333133313331113121111331323123133   >>      C11111333133313232233133313331333133313331113121111331323123132   >>