is and dau "allow, grant" (< da + u) is The suffixes -n and -st are derived from the speedwords un "negative" and its "professional" and are always pronounced in full and take an epenthetic when following a vowel, e.g. gan "scarcely" (< ga + n) is and rist "clerk" (< ri + st) is . The words co "collect, collection" and za "dear, endearment, intimate" may also be used as suffixes; if appended to a word ending in a vowel, they do not shorten that vowel, e.g. lec "correspondence, mail" is and perza "dad(dy), papa" is Suffixes pronounced as a single consonant after a vowel generally shorten that vowel. The exceptions are -d, -z, -r, which leave the vowel long. (As noted above, -z and -r take an epenthetic schwa after any consonant.) Many consonants are pronounced with an unwritten vowel after certain consonants: -d is pronounced after vowels and voiced consonants but d, and after d and voiceless consonants. -m (derived from the word om "article, object, thing") shortens a preceding vowel and is pronounced after any consonant, e.g. dam "donation, gift, present" (< da + m) is and tegm "cover, lid" (< teg + m) is Other single-consonant suffixes - -b (< ib "possible"), -g (< ig "general"), -k (< ik "property, quality", -l (< il "particular (e)special", -p (< ep "location, place, position, set, put"), -s (< is "complement") and -t (< et "little, small") - shorten the preceding vowel and, when they "can be articulated without difficulty" are pronounced as a single consonant after another consonant, otherwise they are pronounced in full as the words from they are derived after other consonants. Dutton adds that -s must always be pronounced after word ending in -k or -g "to avoid confusion with the suffix -x. In addition, three suffixes have completely different forms after consonants and vowels: -f after vowels and -y after consonants -v after vowels and -i after consonants -x after vowels and -o after consonants f ~ -y are obviously abstracted from fy "cause, make, reason, render"; the pairs -v ~ -i and -x ~ -o appear to be arbitrary creations. Also in the pre-1951 version of Speedwords, Dutton gave the apostrophe as a possessive suffix pronounced , e.g. l mant'kap "the boy's head". But in the 1951 Dictionary Dutton list a new root word zy "disease". It is inconceivable that Dutton would