nn inn 小旅館, 客棧 [Card #2; 字卡第2張: 第5個單字, 字母組合發音 nn]
nn = /n/(2個相同子音在一起, 只發一個音)

Some more examples(更多例字):tannin, tennis, connect, disconnect, reconnect, interconnect, bonnet, channel, flannel, fennel, kennel, funnel, tunnel, winnow, inner, dinner, winner, banner, manner, mannequin, perennial, annual, annul, annoy, penny, bunny, funny, sunny, uncanny, cunning, innocuous, innocent, innovate, annotate, announce, anniversary, annex, annihilate, antenna, gonna, pennant, cinnamon, mayonnaise, innumerable, connotation