... -ff- (a or o): chaff, staff, off. -ss- (a in five words): brass, glass, class, pass, grass. c) In unstressed final syllables: tariff, compass. 2. Words are spelled with –bb-, -dd-,-tt-, -gg-, ... letter: -ll-: cell, fill, pull. -ff-: stiff, stuff, Jeff. -ss-: kiss, mess, fuss. -zz-, mainly in onomatopoeic words: buzz, fizz, jazz. b) Also in some words after long vowels: -ll- (a or ... she thought of her behaviour. 14Lesson 2 Section 1. Spelling: Consonant Doubling A. 1. Words are spelled with –ll-, -ff-, -ss-, -zz-: a) In the final position in monosyllables after...