'iipaach: "Men", plural of 'iipa or 'iipach, "man" (Tiipay). The -ch here is part of the word, not a suffix.
wewich: "They see (it)." Normally uuwich: "uu-" and "we-" are seemingly interchangeable on certain verbs, depending on the speaker. Elsewhere Robertson pronounces this more clearly as uuwich. This plural form is used in Tiipay, however for the singular form, speaker Rosalie Robertson uses 'Iipay ewuuw "sees, looks at" rather than Tiipay uwiiw.