Let’s reverse each word: ttbyq → qybtt wyak → kayw mhkr → r k h m → rkhm akhr → rhka asdar → radsa

So maybe last word is not ‘ender’ but ‘endet’ is nonsense. So my a=e guess fails unless asdar ≠ ‘ender’. Let’s try asdar = ‘after’? a=e? No, ‘after’ has f. So maybe a is not e.

Given the difficulty, maybe the plaintext is: type phrase but scrambled differently. Final guess based on pattern of last word asdar anagram → darsa → sarda ? If Atbash then shift: no.

ggold jlnx zuxe nxue nfqne — no. Given the structure, I’d guess this is a simple substitution. A plausible solution if ttbyq = quick ? q(16) in cipher = q? But t=19 for q? t=19, q=16, diff -3; next t=19, u=20, diff +1 — no.

The phrase is: ttbyq wyak mhkr akhr asdar