hu
hu is used to end subordinate and relative clauses. It is redundant for main clauses. Grammatically, it serves the purpose of functioning as a spoken comma.
It is used in the two places where a comma would otherwise have syntactic meaning: clauses and numbers.
So, for example, the sentence:
in te jatan in konpute lenka mi, men mi le pesuwan!
Is identical to the sentence:
in te jatan in konpute lenka mi hu men mi le pesuwan! (both mean: "I need to find my phone!")
And the number:
sijen etu tiju nanku hen lima, lima sijen saka tiju setan hen ha, lima tiju ha
Is identical to the number:
sijen etu tiju nanku hen lima hu lima sijen saka tiju setan hen ha hu lima tiju ha
Both numbers equal "184 597 52" (or, in the Western system, "18 459 752")
Examples
te antomi hu le katin 😦( - "Sleeping is hard 😦("
in ta ka ja le tiku hu le no wisan - "Whether or not they are dead is not known"
mi le amo in ikama "hen" la, le jon matin in ja pi san hen ha hu setan hen wan hu saka ten! - "I love the word 'hen', and have used it 379 times!"