facial blendshape conversion

bhoffman67

DAZ facial blendshapes:
sil, pp, ff, th, dd, kk, ch, ss, nn, rr, aa, e, ih, oh, ou.

UE facial blendshapes (?)
mouth_open, explosive, open,  dental_lip, tight_o, tight, wide, affricate, etc. ?

I'm not familiar with UE, but I think the above short-list of possible blendshapes UE uses do not have a remotely close correlation to DAZ/unity blendshapes.  Any idea how to port/translate these?