Danlwd Fayl Wywa Wy Py An Link

Given the failure of simple ciphers, the subject might be a test string or a non-English phrase in a constructed script.

"an": a→z, n→m → "zm"

However, given the structure (repetition of "wy" and short vowel-consonant patterns), one plausible interpretation is that it is a (e.g., Atbash, Caesar, or keyboard-shift error). danlwd fayl wywa wy py an