d (4th letter) → w (23rd) a → z n → m l → o w → d d → w
d (3) - o(14) = -11 mod26 = 15 → p a (0) - x(23) = -23 mod26 = 3 → d n (13) - o(14) = -1 mod26 = 25 → z l (11) - x(23) = -12 mod26 = 14 → o w (22) - o(14) = 8 → i d (3) - x(23) = -20 mod26 = 6 → g
Result: pdz oig → no.
But then bray with key OX: b (2) - O(15) = negative, need mod 26 wrap. Likely messy. Common in pranks: each letter replaced by the key to its left on QWERTY. Test danlwd :