Be

зэ

ze

(intransitive, non-copulative (usually literary in English): to exist; to have real existence)

зэ

ze

(to occupy a place)

сы

sɨ

(used to declare the subject and object identical or equivalent)

ю

i͡u

(intransitive, non-copulative (usually literary in English): to exist; to have real existence)

是

zh-min-nan

(used to declare the subject and object identical or equivalent)