A wise king was sitting on his throne while talking with the knight. Suddenly his jester burst through the doors giggling like a madman again...

“Your majesty! I just thought of a riddle and I am sure you will enjoy it.” He said with glee. The king was interested and allowed the Jester to continue. The knight was completely dismayed...again.

“Your majesty, for my riddle, I challenge you to a game of words. I bet that you can name any 2 letters and I can name a word that contains the first letter but not the second.”

"Then I will start." Said the King. "Q U"

"Qi!" Said the Jester.

"C H" Said the King.

"Cook!" Said the Jester.

The Wise King then looked at the Jester and laughingly said, "This next combination of letters will stump you. If you can answer this, I'll consider you wiser than me!" He said his 2 letters and the Jester was stumped. What 2 letters did the King say?