C11111333133313232233133313331333133313231312111133131123313121233131   >>    C1111133313331323223313331333133313331323131211113313112331312123313   <<    C11111333133313232233133313331333133313231312111133131123313121233133   >>      C11111333133313232233133313331333133313231312111133131123313121233132   >>