‘He/she/it walked’,

easy way to type it:    chaachai

Lolly Metcalf’s South Slough Milluk

Americanist Phonetic

 IPA

[ ča·čai ],

 then

[ ča·čai ]

[ tʃɑˑtʃɑi ],

 then

[ tʃɑˑtʃɑi ]

Instant Phonetic Englishization:  chah_chah_ee, with the last two parts said as one syllable to rhyme with the English word ‘eye’.