Answer:
EARPHONES
Step-by-step explanation:
We are to create a nine letter word. Start from any of the corners while moving in a clockwise direction.
There are four corners in the box:
Top left and bottom right corners have blanks, letter in the top right and bottom left corners are E and H respectively.
Hence, we would have 4 possible nine-letter word combination.
Let's state the possible nine-letter words
From the top left corner: _EEA_PHOS
From the bottom left corner: _PHO_EEAS
From the top right corner: EA_PHO_ES
From the bottom right corner: _PHO_EEAS
From the top right corner, we can form the word: EARPHONES
The missing letters are 'R' and 'N'