Based on the order of the English alphabet, FBAB is related to CYXY in a…

Concept: In a letter analogy, you find the fixed positional rule that maps each letter of the source group to the corresponding letter of its partner group (using A=1, B=2, ..., Z=26), then apply that same rule to the new group. Here the rule is a constant backward shift of 3 positions for every letter.

Find the rule from the given pairs (each letter moves 3 places back in the alphabet):

• FBAB to CYXY: F to C, B to Y, A to X, B to Y — every letter is shifted 3 positions backward.

• BXWX to YUTU: B to Y, X to U, W to T, X to U — the same 3-position backward shift holds.

Apply the same backward shift of 3 to KGFG, letter by letter:

1. K is the 11th letter; 11 - 3 = 8, which is H.

2. G is the 7th letter; 7 - 3 = 4, which is D.

3. F is the 6th letter; 6 - 3 = 3, which is C.

4. G is the 7th letter; 7 - 3 = 4, which is D.

Putting the letters together, KGFG maps to HDCD.

Cross-check: reversing the rule (shift each letter of HDCD forward by 3) gives H to K, D to G, C to F, D to G — exactly KGFG, confirming the mapping.