Were there supposed to be limited options in the wheel? I only ever saw a keyboard with all the letters available. Or do you mean there are options in the shop where certain letters can be automatically revealed in the answer?
Yes in the shop you can buy a segment that can reveal the first letter or open a letter frok a to j if one exists, or open a vowel or reprieve one step from hangman
these all are options in the shop which can be brought.