Think (present)
Thought (past)
Say (present)
Said (past)
Wear (present)
Wore (past)
Have (present)
Had (past)
See (present)
Saw (past)
Stand (present)
Stood (past)
Go (present)
Went (past)
Read (present)
Read (past)
Come (present)
Came (past)
Make (present)
Made (past)