15 questions
Walk
Walked
Walker
Climb
Climbing
Climbed
Scream
Screamed
Screen
Visit
Visiting
Visited
Speak
Spoke
Speaked
Run
Runned
Ran
Swim
Swum
Swam
Bring
Brought
Bought
Read
Red
Read
Put
Put
Putted
Fly
Flew
Flied
Thank
Thank you
Thanked
Think
Thinked
Thought
Fight
Fighted
Fought
Buy
Brought
Bought