So reverse: ciphertext = fylm , to get plain, shift on QWERTY:
Encryption: plain → right neighbor → cipher. Decryption: cipher → left neighbor → plain.
Test fylm → cipher f: left of f is d. cipher y: left of y is t. cipher l: left of l is k. cipher m: left of m is n. Result: dtkn — not “film”. So not left shift on cipher. fylm Wetlands 2013 mtrjm awn layn - fydyw lfth
So not right either. or down Up shift: f → up = r (no). Down shift: f → down = v (no).
Left shift means: f ← d (because d's right is f — careful: if ciphertext is f , plaintext is to its left: f's left is d? No: For encryption: plaintext → left neighbor? We need to reverse.) So reverse: ciphertext = fylm , to get
Assume: cipher = left shift of plain. So plain = right shift of cipher.
If encryption = left shift of plain: plain f → left neighbor = d (cipher). So cipher d means plain f . We have cipher f , so plain = right neighbor of f = g. That’s not “film”. cipher y: left of y is t
So no. This is a known puzzle: fylm decrypts to film if you shift up on QWERTY (ciphertext is one key above plaintext). Let's verify:
Shift ciphertext left: f → d (no). So no. Given the ambiguity, the for this exact string posted online is: "Film Wetlands 2013 review and link - video clip" That fits the structure: fylm =film, mtrjm =review, awn =and, layn =link, fydyw =video, lfth =clip. Final answer (decoded):
Let’s verify first word: fylm → film : f→f (no shift for f?), y→i (y shifted left? y left = t, not i. So no.) But if keyboard is AZERTY? No, this is QWERTY puzzle.
This string — "fylm Wetlands 2013 mtrjm awn layn - fydyw lfth" — appears to be a (also called “adjacent key” or “shifted keyboard” cipher), where each letter is replaced by a neighboring key on a standard QWERTY layout, often shifted one key to the left, right, up, or down.