Guess d = e (common). Then y might be t .
Test word fydyw : if y=t, d=e → f t e t w → ? "f t e t w" — maybe "state"? s→f? No. "treat"? t→f? No. afdl brnamj drdsht fydyw shwayy
afdl = "from": f→a: shift –5 (or +21) r→f: shift –12 o→d: shift –11 m→l: shift –1 — inconsistent. Guess d = e (common)
Word1 afdl shift –1 → zeck (no) Try +1: bgem — no. 2nd shift 2
Try drdsht : d=e, r=?, s=?, h=?, t=? e r e s h t — could be "erest"? No. "crest"? c→d? No. Sometimes each word is shifted by its position (1st word shift 1, 2nd shift 2, etc.).