English verb conjugation
COULD BOWL

Regular verb: bowl - bowled - bowled

Affirmation

Simple form	V-ing form
I could bowl you could bowl she could bowl we could bowl you could bowl they could bowl	I could be bowling you could be bowling she could be bowling we could be bowling you could be bowling they could be bowling
Perfect	V-ing perfect
I could have bowled you could have bowled she could have bowled we could have bowled you could have bowled they could have bowled	I could have been bowling you could have been bowling she could have been bowling we could have been bowling you could have been bowling they could have been bowling

Negation

Simple form	V-ing form
I couldn't bowl you couldn't bowl she couldn't bowl we couldn't bowl you couldn't bowl they couldn't bowl	I couldn't be bowling you couldn't be bowling she couldn't be bowling we couldn't be bowling you couldn't be bowling they couldn't be bowling
Perfect	V-ing perfect
I couldn't have bowled you couldn't have bowled she couldn't have bowled we couldn't have bowled you couldn't have bowled they couldn't have bowled	I couldn't have been bowling you couldn't have been bowling she couldn't have been bowling we couldn't have been bowling you couldn't have been bowling they couldn't have been bowling

Interrogative form

Simple form	V-ing form
could I bowl? could you bowl? could she bowl? could we bowl? could you bowl? could they bowl?	could I be bowling? could you be bowling? could she be bowling? could we be bowling? could you be bowling? could they be bowling?
Perfect	V-ing perfect
could I have bowled? could you have bowled? could she have bowled? could we have bowled? could you have bowled? could they have bowled?	could I have been bowling? could you have been bowling? could she have been bowling? could we have been bowling? could you have been bowling? could they have been bowling?

Interro-negative form

Simple form	V-ing form
couldn't I bowl? couldn't you bowl? couldn't she bowl? couldn't we bowl? couldn't you bowl? couldn't they bowl?	couldn't I be bowling? couldn't you be bowling? couldn't she be bowling? couldn't we be bowling? couldn't you be bowling? couldn't they be bowling?
Perfect	V-ing perfect
couldn't I have bowled? couldn't you have bowled? couldn't she have bowled? couldn't we have bowled? couldn't you have bowled? couldn't they have bowled?	couldn't I have been bowling? couldn't you have been bowling? couldn't she have been bowling? couldn't we have been bowling? couldn't you have been bowling? couldn't they have been bowling?