Menyaachamlly: "You all", indefinite pronoun used here optionally. This is the second-person or "you" form of Tiipay nyaachamlly, "everyone, everything". Robertson's version seems to have a long "aa" in the first syllable, although the word is transcribed as nyachamlly in other sources. 'Iipay equivalent is nyaamat, which can also be made into menyaamat, "you all".
muuwich: "You (plural) see, look at". Second-person of uuwich, "they see, look at". This plural form is used in Tiipay, however for the singular form, Robertson uses 'Iipay ewuuw "sees, looks at" rather than Tiipay uwiiw.