ff giraffe 長頸鹿 [Card #1; 字卡第1張: 第4個單字, 字母組合發音 ff]
ff = /f/(2個相同子音在一起, 只發一個音)

Some more examples(更多例字):off, offline, office, staff, chaff, riff, tariff, midriff, miff, cliff, whiff, sniff, stiff, stuff, snuff, scuff, cuff, huff, muff, puff, buff, rebuff, buffet, bluff, fluff, fluffy, gruff, doff, scoff, coffee, toffee, caffeine, muffin, affable, baffle, raffle, waffle, riffle, sniffle, muffle, ruffle, shuffle, scuffle, snuffle, truffle, daffodil, saffron, chiffon, buffoon, iffy, jiffy, differ, offer, coffer, buffer, suffer, suffix, suffrage, suffocate, suffice, sufficient, suffuse, difficult, different, difference, diffuse, effort, offend, affection, affect, effect, effective, efficient, affair, affix, afflict, affiliate, affinity, affirm, afford, affluent, affluence, affidavit, plaintiff, sheriff, traffic, scaffold, guffaw