English verb conjugation
COULD PICKET

Regular verb: picket - picketed - picketed

Affirmation

Simple form	V-ing form
I could picket you could picket he could picket we could picket you could picket they could picket	I could be picketing you could be picketing he could be picketing we could be picketing you could be picketing they could be picketing
Perfect	V-ing perfect
I could have picketed you could have picketed he could have picketed we could have picketed you could have picketed they could have picketed	I could have been picketing you could have been picketing he could have been picketing we could have been picketing you could have been picketing they could have been picketing

Negation

Simple form	V-ing form
I could not picket you could not picket he could not picket we could not picket you could not picket they could not picket	I could not be picketing you could not be picketing he could not be picketing we could not be picketing you could not be picketing they could not be picketing
Perfect	V-ing perfect
I could not have picketed you could not have picketed he could not have picketed we could not have picketed you could not have picketed they could not have picketed	I could not have been picketing you could not have been picketing he could not have been picketing we could not have been picketing you could not have been picketing they could not have been picketing

Interrogative form

Simple form	V-ing form
could I picket? could you picket? could he picket? could we picket? could you picket? could they picket?	could I be picketing? could you be picketing? could he be picketing? could we be picketing? could you be picketing? could they be picketing?
Perfect	V-ing perfect
could I have picketed? could you have picketed? could he have picketed? could we have picketed? could you have picketed? could they have picketed?	could I have been picketing? could you have been picketing? could he have been picketing? could we have been picketing? could you have been picketing? could they have been picketing?

Interro-negative form

Simple form	V-ing form
could I not picket? could you not picket? could he not picket? could we not picket? could you not picket? could they not picket?	could I not be picketing? could you not be picketing? could he not be picketing? could we not be picketing? could you not be picketing? could they not be picketing?
Perfect	V-ing perfect
could I not have picketed? could you not have picketed? could he not have picketed? could we not have picketed? could you not have picketed? could they not have picketed?	could I not have been picketing? could you not have been picketing? could he not have been picketing? could we not have been picketing? could you not have been picketing? could they not have been picketing?