C11111333133313232233133313331333133313231312111133131123313331123311211331   >>    C1111133313331323223313331333133313331323131211113313112331333112331121133   <<    C11111333133313232233133313331333133313231312111133131123313331123311211333   >>      C11111333133313232233133313331333133313231312111133131123313331123311211332   >>