Voragh:

>yugh                     include, consist of, be composed of (v) (qepHom 2015)
 
>cha’ bIQSIp HeySelmey, wa’ yInSIp HeySel je yugh bIQ ’o’rIS.
>The water molecule consists of two hydrogen atoms and one oxygen atom.
 >(Lieven, OK'd by Okrand at qepHom 2015)
 
>QongtaHvIS HeghDI' SuvwI', 'oynot, Hom je neH yugh.
>A warrior who dies in his sleep is no more than flesh and bone.
 >(DSC/Qov "Battle At the Binary Stars" NON-CANON)
 
>yughmoH            include,  cause to be included (v)
 
>(De'vID, from Okrand, 2/17/2018):  To filter (in this sense) is {yughmoH} “include” (that is, “cause to be included”).  So {X neH yughmoH} “filter for X only, include X only".

Thanks again!