C11111333133313232233133313331333133313331312111133133313231333131121131233131   >>    C1111133313331323223313331333133313331333131211113313331323133313112113123313   <<    C11111333133313232233133313331333133313331312111133133313231333131121131233133   >>      C11111333133313232233133313331333133313331312111133133313231333131121131233132   >>