C111123313331323113313331333133313331323131211113313121111331333112111   >>    C11112331333132311331333133313331333132313121111331312111133133311211   <<    C111123313331323113313331333133313331323131211113313121111331333112113   >>      C111123313331323113313331333133313331323131211113313121111331333112112   >>