could lube
Regular verb: lube - lubed- lubed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could lube
you could lube
he could lube
we could lube
you could lube
they could lube 	I could be lubing
you could be lubing
he could be lubing
we could be lubing
you could be lubing
they could be lubing	I could have lubed
you could have lubed
he could have lubed
we could have lubed
you could have lubed
they could have lubed	I could have been lubing
you could have been lubing
he could have been lubing
we could have been lubing
you could have been lubing
they could have been lubing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not lube
you could not lube
he could not lube
we could not lube
you could not lube
they could not lube 	I could not be lubing
you could not be lubing
he could not be lubing
we could not be lubing
you could not be lubing
they could not be lubing	I could not have lubed
you could not have lubed
he could not have lubed
we could not have lubed
you could not have lubed
they could not have lubed	I could not have been lubing
you could not have been lubing
he could not have been lubing
we could not have been lubing
you could not have been lubing
they could not have been lubing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I lube?
could you lube?
could he lube?
could we lube?
could you lube?
could they lube? 	could I be lubing?
could you be lubing?
could he be lubing?
could we be lubing?
could you be lubing?
could they be lubing? 	could I have lubed?
could you have lubed?
could he have lubed?
could we have lubed?
could you have lubed?
could they have lubed? 	could I have been lubing?
could you have been lubing?
could he have been lubing?
could we have been lubing?
could you have been lubing?
could they have been lubing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not lube?
could you not lube?
could he not lube?
could we not lube?
could you not lube?
could they not lube? 	could I not be lubing?
could you not be lubing?
could he not be lubing?
could we not be lubing?
could you not be lubing?
could they not be lubing? 	could I not have lubed?
could you not have lubed?
could he not have lubed?
could we not have lubed?
could you not have lubed?
could they not have lubed? 	could I not have been lubing?
could you not have been lubing?
could he not have been lubing?
could we not have been lubing?
could you not have been lubing?
could they not have been lubing?