could idle
Regular verb: idle - idled- idled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?