pro-sumti whose referent's identity the speaker is assuming the listener to know
Cf. do'au nau'o. differs from zo do'au in that the listener isn't free to choose, but rather is expected to know what the speaker knows but is not explicitly saying. similar to one use of English "yk" (different from ie'o). possibly equivalent in meaning to «lo poi'i do djuno lo du'u ma kau me ke'a», or maybe «lo poi'i lo du'u ma kau me ke'a ku slabu do».