C111123313331323113313331333133313331323131211113313331312111221   >>    C11112331333132311331333133313331333132313121111331333131211122   <<    C111123313331323113313331333133313331323131211113313331312111223   >>      C111123313331323113313331333133313331323131211113313331312111222   >>