tnzyl → g m a b o → “gmabo”? Unlikely. Maybe it's “g m a b o” = “gmabo” nonsense.
t (20) → g n (14) → a z (26) → m y (25) → l l (12) → y So tnzyl → → “gamly” not English. tnzyl mlf aym bwt fry fayr
t→s, n→m, z→y, y→x, l→k → “smyxk” no. Shift 1 forward: t→u, n→o, z→a, y→z, l→m → “uoazm” no. Given the pattern “fry fayr” probably means if we change y→i in the second word. So maybe the cipher is: each letter is shifted by -1 (a→z, b→a, etc.) except y→i is special? Unlikely. I think the most likely intended solution is to read it as a Caesar shift of +1 if the puzzle is simple, but let's test +1 on the whole phrase: tnzyl → g m a b o → “gmabo”
t (20) + 5 = 25 → y n (14) + 5 = 19 → s z (26) + 5 = 31 mod26 = 5 → e y (25) + 5 = 30 mod26 = 4 → d l (12) + 5 = 17 → q → “y s e d q” → not a word. Let’s check if it's (common on forums): t (20) → g n (14) → a
It looks like you've given a cipher or a code. The phrase tnzyl mlf aym bwt fry fayr appears to be a — possibly a shift cipher (like Caesar cipher) or an Atbash cipher (where A ↔ Z, B ↔ Y, etc.).
Word by word Atbash:
Original: t n z y l m l f a y m b w t f r y f a y r Atbash: g m a b o n o u z b n y d g u i b u z b i