could pustulate
Regular verb: pustulate - pustulated- pustulated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could pustulate
you could pustulate
she could pustulate
we could pustulate
you could pustulate
they could pustulate 	I could be pustulating
you could be pustulating
she could be pustulating
we could be pustulating
you could be pustulating
they could be pustulating	I could have pustulated
you could have pustulated
she could have pustulated
we could have pustulated
you could have pustulated
they could have pustulated	I could have been pustulating
you could have been pustulating
she could have been pustulating
we could have been pustulating
you could have been pustulating
they could have been pustulating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't pustulate
you couldn't pustulate
she couldn't pustulate
we couldn't pustulate
you couldn't pustulate
they couldn't pustulate 	I couldn't be pustulating
you couldn't be pustulating
she couldn't be pustulating
we couldn't be pustulating
you couldn't be pustulating
they couldn't be pustulating	I couldn't have pustulated
you couldn't have pustulated
she couldn't have pustulated
we couldn't have pustulated
you couldn't have pustulated
they couldn't have pustulated	I couldn't have been pustulating
you couldn't have been pustulating
she couldn't have been pustulating
we couldn't have been pustulating
you couldn't have been pustulating
they couldn't have been pustulating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I pustulate?
could you pustulate?
could she pustulate?
could we pustulate?
could you pustulate?
could they pustulate? 	could I be pustulating?
could you be pustulating?
could she be pustulating?
could we be pustulating?
could you be pustulating?
could they be pustulating? 	could I have pustulated?
could you have pustulated?
could she have pustulated?
could we have pustulated?
could you have pustulated?
could they have pustulated? 	could I have been pustulating?
could you have been pustulating?
could she have been pustulating?
could we have been pustulating?
could you have been pustulating?
could they have been pustulating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I pustulate?
couldn't you pustulate?
couldn't she pustulate?
couldn't we pustulate?
couldn't you pustulate?
couldn't they pustulate? 	couldn't I be pustulating?
couldn't you be pustulating?
couldn't she be pustulating?
couldn't we be pustulating?
couldn't you be pustulating?
couldn't they be pustulating? 	couldn't I have pustulated?
couldn't you have pustulated?
couldn't she have pustulated?
couldn't we have pustulated?
couldn't you have pustulated?
couldn't they have pustulated? 	couldn't I have been pustulating?
couldn't you have been pustulating?
couldn't she have been pustulating?
couldn't we have been pustulating?
couldn't you have been pustulating?
couldn't they have been pustulating?