C11111333133313232233133313331333133313231333133313311211331333112131   >>    C1111133313331323223313331333133313331323133313331331121133133311213   <<    C11111333133313232233133313331333133313231333133313311211331333112133   >>      C11111333133313232233133313331333133313231333133313311211331333112132   >>