could demolish
Regular verb: demolish - demolished- demolished

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could demolish
you could demolish
she could demolish
we could demolish
you could demolish
they could demolish 	I could be demolishing
you could be demolishing
she could be demolishing
we could be demolishing
you could be demolishing
they could be demolishing	I could have demolished
you could have demolished
she could have demolished
we could have demolished
you could have demolished
they could have demolished	I could have been demolishing
you could have been demolishing
she could have been demolishing
we could have been demolishing
you could have been demolishing
they could have been demolishing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't demolish
you couldn't demolish
she couldn't demolish
we couldn't demolish
you couldn't demolish
they couldn't demolish 	I couldn't be demolishing
you couldn't be demolishing
she couldn't be demolishing
we couldn't be demolishing
you couldn't be demolishing
they couldn't be demolishing	I couldn't have demolished
you couldn't have demolished
she couldn't have demolished
we couldn't have demolished
you couldn't have demolished
they couldn't have demolished	I couldn't have been demolishing
you couldn't have been demolishing
she couldn't have been demolishing
we couldn't have been demolishing
you couldn't have been demolishing
they couldn't have been demolishing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I demolish?
could you demolish?
could she demolish?
could we demolish?
could you demolish?
could they demolish? 	could I be demolishing?
could you be demolishing?
could she be demolishing?
could we be demolishing?
could you be demolishing?
could they be demolishing? 	could I have demolished?
could you have demolished?
could she have demolished?
could we have demolished?
could you have demolished?
could they have demolished? 	could I have been demolishing?
could you have been demolishing?
could she have been demolishing?
could we have been demolishing?
could you have been demolishing?
could they have been demolishing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I demolish?
couldn't you demolish?
couldn't she demolish?
couldn't we demolish?
couldn't you demolish?
couldn't they demolish? 	couldn't I be demolishing?
couldn't you be demolishing?
couldn't she be demolishing?
couldn't we be demolishing?
couldn't you be demolishing?
couldn't they be demolishing? 	couldn't I have demolished?
couldn't you have demolished?
couldn't she have demolished?
couldn't we have demolished?
couldn't you have demolished?
couldn't they have demolished? 	couldn't I have been demolishing?
couldn't you have been demolishing?
couldn't she have been demolishing?
couldn't we have been demolishing?
couldn't you have been demolishing?
couldn't they have been demolishing?