[tlhIngan Hol] bID in noun-noun constructions

[mayqel qunen'oS]

SuStel:
> pawpu' poH luSopbogh nov. ghIq wa' vI'
> vagh DIS luSoppu'.

I've thought of this solution, but the thing I can't understand, is why
{bID} is used as the second noun in {paH bID} etc, while at the "half
utility deck" its' use is seemingly/apparently weird.

~ lIr qIj
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