C111123313331323113313331333133313331323131211113313331322331312111   >>    C11112331333132311331333133313331333132313121111331333132233131211   <<    C111123313331323113313331333133313331323131211113313331322331312113   >>      C111123313331323113313331333133313331323131211113313331322331312112   >>