Take "fylm": f → right neighbor is g (not f) — so f itself would be intended letter if cipher letter was d. So maybe typist shifted left: ciphertext letter = intended letter’s right neighbor. Then intended = cipher’s left neighbor.
Decode: take each cipher letter, find the key immediately to its left on QWERTY.
Let me use actual mapping (US QWERTY, row by row):
Let's decode assuming each letter was intended to be the key to its (i.e., typist's hand was offset one key right):
f → g y → u l → ; m → , → gu;,' no.
Given the time, I recall this exact string from an internet meme: it decodes to:
Not matching "film" (f i l m). But fylm → if shift left on keyboard from intended "film": f (no change), i → u? no. Wait, let's brute logically:
Check: film → f (no change? actually f→f), i→k? no. That fails.