C111123313331323113313331333133313121111131121133133313231131131   >>    C11112331333132311331333133313331312111113112113313331323113113   <<    C111123313331323113313331333133313121111131121133133313231131133   >>      C111123313331323113313331333133313121111131121133133313231131132   >>