In the game of Sense, a word is formed by combining the letters G, H, I, J, K:
G cannot be the first or last letter in a word.
I and J cannot be next to each other.
If J occurs in a word, then it occurs an odd number of times.
H cannot begin a word unless K ends the word.
Which one of the following is NOT a word but could become a word by adding one or more letters to its right end?