ff

ff = /f/

off, offline, office, staff, chaff, riff, tariff, giraffe, midriff, cliff, whiff, sniff, stiff, stuff, snuff, scuff, cuff, huff, muff, puff, buff, rebuff, buffet, bluff, fluff, fluffy, gruff, 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