C11111333133313232233133313331333133313231333133313311211331333232233131   >>    C1111133313331323223313331333133313331323133313331331121133133323223313   <<    C11111333133313232233133313331333133313231333133313311211331333232233133   >>      C11111333133313232233133313331333133313231333133313311211331333232233132   >>