Awn Layn - Fydyw Lfth: Fylm 99 Women 1969 Mtrjm

Alternatively, maybe it's a simple letter substitution where each letter is replaced by another. Let me look for the letters' frequency. In English, common letters are E, T, A, O, I, N, S, H, R. Let's see if "mtrjm" has any possible common words. "99 Women" is a film about 99 women dealing with societal issues. The user might be looking for a deeper message or subtitle in the encoded text. But I need to decode it first. Let me try shifting by 16 (which is 26-10=16). Let's see: