If RUNNER is coded as SUMMER, then what would be the code for WINTER?

Answer 1

XIMSER might be right answer

Comments

The answer is XIMSER.
The 2nd, 5th, and 6th letters remain unchanged.
The 1st letters are moved one step forward from the alphabet, whilst the 3rd and 4th move 1 step backwards, to obtain the code.

Answer 2

The answer is XIMSER.
The 2nd, 5th, and 6th letters remain unchanged.
The 1st letters are moved one step forward from the alphabet, whilst the 3rd and 4th move 1 step backwards, to obtain the code.