C111123313331323113313331333133313331323131211113313121111331333112121111   >>    C11112331333132311331333133313331333132313121111331312111133133311212111   <<    C111123313331323113313331333133313331323131211113313121111331333112121113   >>      C111123313331323113313331333133313331323131211113313121111331333112121112   >>