fwew:

tìrusun nìpxi nì'aw
fwew ìlä lì'fya:

-tswo (suffix)

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lì'upam (IPA): ͡tswo 
'ìnglìsì: ability to ...
can be used with practically any verb. For si-verbs, si is dropped and -tswo is attached to the remaining part.
tsim: naviteri.org