To solve this problem, let's analyze each letter group based on their positions in the English alphabet:

(A) DKG:

• D is at position 4.
• K is at position 11.
• G is at position 7.

The difference between consecutive letters:

• K - D = 11 - 4 = 7
• G - K = 7 - 11 = -4

(B) FMI:

• F is at position 6.
• M is at position 13.
• I is at position 9.

The difference between consecutive letters:

• M - F = 13 - 6 = 7
• I - M = 9 - 13 = -4

(C) MTP:

• M is at position 13.
• T is at position 20.
• P is at position 16.

The difference between consecutive letters:

• T - M = 20 - 13 = 7
• P - T = 16 - 20 = -4

(D) JQM:

• J is at position 10.
• Q is at position 17.
• M is at position 13.

The difference between consecutive letters:

• Q - J = 17 - 10 = 7
• M - Q = 13 - 17 = -4

(E) HOL:

• H is at position 8.
• O is at position 15.
• L is at position 12.

The difference between consecutive letters:

• O - H = 15 - 8 = 7
• L - O = 12 - 15 = -3

Based on the analysis:

• Options (A), (B), (C), and (D) follow a pattern where the difference between consecutive letters alternates between +7 and -4.
• Option (E) does not follow this pattern. Although the difference between O and H is +7, the difference between L and O is -3 instead of -4.

Therefore, the letter group (E) HOL does not belong to the group formed by the other options.

The correct answer is (E) HOL.