English verb conjugation
COULD IDLE

Regular verb: idle - idled - idled

Affirmation

Simple form	V-ing form
I could idle you could idle he could idle we could idle you could idle they could idle	I could be idling you could be idling he could be idling we could be idling you could be idling they could be idling
Perfect	V-ing perfect
I could have idled you could have idled he could have idled we could have idled you could have idled they could have idled	I could have been idling you could have been idling he could have been idling we could have been idling you could have been idling they could have been idling

Negation

Simple form	V-ing form
I could not idle you could not idle he could not idle we could not idle you could not idle they could not idle	I could not be idling you could not be idling he could not be idling we could not be idling you could not be idling they could not be idling
Perfect	V-ing perfect
I could not have idled you could not have idled he could not have idled we could not have idled you could not have idled they could not have idled	I could not have been idling you could not have been idling he could not have been idling we could not have been idling you could not have been idling they could not have been idling

Interrogative form

Simple form	V-ing form
could I idle? could you idle? could he idle? could we idle? could you idle? could they idle?	could I be idling? could you be idling? could he be idling? could we be idling? could you be idling? could they be idling?
Perfect	V-ing perfect
could I have idled? could you have idled? could he have idled? could we have idled? could you have idled? could they have idled?	could I have been idling? could you have been idling? could he have been idling? could we have been idling? could you have been idling? could they have been idling?

Interro-negative form

Simple form	V-ing form
could I not idle? could you not idle? could he not idle? could we not idle? could you not idle? could they not idle?	could I not be idling? could you not be idling? could he not be idling? could we not be idling? could you not be idling? could they not be idling?
Perfect	V-ing perfect
could I not have idled? could you not have idled? could he not have idled? could we not have idled? could you not have idled? could they not have idled?	could I not have been idling? could you not have been idling? could he not have been idling? could we not have been idling? could you not have been idling? could they not have been idling?