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 couldn't idle you couldn't idle he couldn't idle we couldn't idle you couldn't idle they couldn't idle	I couldn't be idling you couldn't be idling he couldn't be idling we couldn't be idling you couldn't be idling they couldn't be idling
Perfect	V-ing perfect
I couldn't have idled you couldn't have idled he couldn't have idled we couldn't have idled you couldn't have idled they couldn't have idled	I couldn't have been idling you couldn't have been idling he couldn't have been idling we couldn't have been idling you couldn't have been idling they couldn't 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
couldn't I idle? couldn't you idle? couldn't he idle? couldn't we idle? couldn't you idle? couldn't they idle?	couldn't I be idling? couldn't you be idling? couldn't he be idling? couldn't we be idling? couldn't you be idling? couldn't they be idling?
Perfect	V-ing perfect
couldn't I have idled? couldn't you have idled? couldn't he have idled? couldn't we have idled? couldn't you have idled? couldn't they have idled?	couldn't I have been idling? couldn't you have been idling? couldn't he have been idling? couldn't we have been idling? couldn't you have been idling? couldn't they have been idling?