English verb conjugation
COULD GRILL

Regular verb: grill - grilled - grilled

Affirmation

Simple form	V-ing form
I could grill you could grill he could grill we could grill you could grill they could grill	I could be grilling you could be grilling he could be grilling we could be grilling you could be grilling they could be grilling
Perfect	V-ing perfect
I could have grilled you could have grilled he could have grilled we could have grilled you could have grilled they could have grilled	I could have been grilling you could have been grilling he could have been grilling we could have been grilling you could have been grilling they could have been grilling

Negation

Simple form	V-ing form
I could not grill you could not grill he could not grill we could not grill you could not grill they could not grill	I could not be grilling you could not be grilling he could not be grilling we could not be grilling you could not be grilling they could not be grilling
Perfect	V-ing perfect
I could not have grilled you could not have grilled he could not have grilled we could not have grilled you could not have grilled they could not have grilled	I could not have been grilling you could not have been grilling he could not have been grilling we could not have been grilling you could not have been grilling they could not have been grilling

Interrogative form

Simple form	V-ing form
could I grill? could you grill? could he grill? could we grill? could you grill? could they grill?	could I be grilling? could you be grilling? could he be grilling? could we be grilling? could you be grilling? could they be grilling?
Perfect	V-ing perfect
could I have grilled? could you have grilled? could he have grilled? could we have grilled? could you have grilled? could they have grilled?	could I have been grilling? could you have been grilling? could he have been grilling? could we have been grilling? could you have been grilling? could they have been grilling?

Interro-negative form

Simple form	V-ing form
could I not grill? could you not grill? could he not grill? could we not grill? could you not grill? could they not grill?	could I not be grilling? could you not be grilling? could he not be grilling? could we not be grilling? could you not be grilling? could they not be grilling?
Perfect	V-ing perfect
could I not have grilled? could you not have grilled? could he not have grilled? could we not have grilled? could you not have grilled? could they not have grilled?	could I not have been grilling? could you not have been grilling? could he not have been grilling? could we not have been grilling? could you not have been grilling? could they not have been grilling?