You don't need to invent new ones, English already has plenty of digraphs: gh, sh, ou, ie, ei, ae, oa, th, ng, gn, wh, ch, ph, kn, tch, ough, ti, zg, ci, wr, and qu.
I’m curious how you got to your examples. Will upvote an honest answer. The ii is used for y, long i, and short i, and I don’t understand any of the vs, or why they would be obvious in these combinations, doesn’t v only make one sound in English?
