Match List - I with List - II. List - I (Word) List - II (Unique Code) (A) Q U…

Concept: in a mirror (reflection) substitution code, each letter is replaced by a fixed partner taken from one reflection table. The table used here pairs the letter at position p with the letter at position 26 − p for p = 1 to 25, so A pairs with Y, B with X, and so on, while M (p = 13) is its own partner; Z has no partner under this reflection and is left unchanged, and Z does not occur anywhere in this item. Because the pairing is symmetric, the same table both encodes and decodes, so each word carries exactly one unique code.

The reflection pairs used here are A↔Y, B↔X, C↔W, D↔V, E↔U, F↔T, G↔S, H↔R, I↔Q, J↔P, K↔O, L↔N and M↔M, with Z left unchanged.

Application: encode each word of List - I letter by letter with that single table.

1. QUAKE: Q→I, U→E, A→Y, K→O, E→U, giving the code IEYOU.

2. OFTEN: O→K, F→T, T→F, E→U, N→L, giving the code KTFUL.

3. PEACH: P→J, E→U, A→Y, C→W, H→R, giving the code JUYWR.

4. DRIVE: D→V, R→H, I→Q, V→D, E→U, giving the code VHQDU.

Cross-check: because the reflection is its own inverse, applying the same table to a code must return the original word — KTFUL gives K→O, T→F, F→T, U→E, L→N, that is OFTEN. Every entry of List - II is consumed exactly once, so the matching is one-to-one. The rule sometimes guessed for such items — reverse the word, then shift each letter one place forward — fails on the very first word: QUAKE reversed is EKAUQ, which shifts to FLBVR, a string that appears nowhere in List - II.

Result: QUAKE pairs with IEYOU, OFTEN with KTFUL, PEACH with JUYWR and DRIVE with VHQDU, i.e. (A)-(III), (B)-(I), (C)-(IV), (D)-(II).