183

Noun + ~-cha- verbalizer:

kama. cha- what happened' + =,ta, 2+3 S + -sa final suffix >

kama.ch.ta.sa [kamactasa] ‘what happened to you?'

(La Paz/Compi; does not reduce to ['s])

[kamastasa] (Socca; obligatory)

When the /ch/ of -chi NI verbal inflection fol-
lows the /ch/ of -cha- verbal derivational suffix, the
geminate /chch/ reduces to one which then obligatorily

reduces to [s] in La Paz.

ati- ‘know' + -cha- causative + - chi NI +
Yair —=—="-- -—-C——

- *yati
=-ta, 133 S > *yati.ch.ch.ta >

. wv
yati.ch.ta [yatista] ‘maybe I teach' (La Paz)

4-3.22.25.2 /ch/ --> /s/ / [+cons] [+cons ]

Reduction of /ch/ to the alveolar fricative
phoneme /s/ occurs in certain restricted circumstances
involving the verbal inflectional suffix -chi NI. In
all dialects investigated the /ch/ of -chi NI obliga-
torily reduces to /s/ when it occurs before a consonant.

In all available examples the consonant is /t/.