1.try ( tries )( trying )( tried )
2.push( pushes )( pushing )( pushed)
3.enter( enters )( entering )( entered)
4.play(plays )(playing )( played )
5.sing(sings)( singing )( sang )
6.sell( sells )( selling )( sold )
7.spend(spends)(spending )(spent )
8.speak(speaks)( speaking )(spoke )
9.fly( flies )(flying )( flew )
10.ride(rides)( riding )( rode )
11.die( dies)( dying )( died )
12.cry( cries )( crying )(cried )
13.pick(picks )(picking )(picked )
14.count(counts )(counting )(counted )
15.buy(buys )(buying )( bought )
16.cost( costs )(costing )( cost )
17.swim(swims )(swimming )(swam )
18.say(says )(saying )(said )
19.stand( stands )(standing )( stood )