could dismantle
Regular verb: dismantle - dismantled- dismantled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could dismantle
you could dismantle
she could dismantle
we could dismantle
you could dismantle
they could dismantle 	I could be dismantling
you could be dismantling
she could be dismantling
we could be dismantling
you could be dismantling
they could be dismantling	I could have dismantled
you could have dismantled
she could have dismantled
we could have dismantled
you could have dismantled
they could have dismantled	I could have been dismantling
you could have been dismantling
she could have been dismantling
we could have been dismantling
you could have been dismantling
they could have been dismantling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't dismantle
you couldn't dismantle
she couldn't dismantle
we couldn't dismantle
you couldn't dismantle
they couldn't dismantle 	I couldn't be dismantling
you couldn't be dismantling
she couldn't be dismantling
we couldn't be dismantling
you couldn't be dismantling
they couldn't be dismantling	I couldn't have dismantled
you couldn't have dismantled
she couldn't have dismantled
we couldn't have dismantled
you couldn't have dismantled
they couldn't have dismantled	I couldn't have been dismantling
you couldn't have been dismantling
she couldn't have been dismantling
we couldn't have been dismantling
you couldn't have been dismantling
they couldn't have been dismantling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I dismantle?
could you dismantle?
could she dismantle?
could we dismantle?
could you dismantle?
could they dismantle? 	could I be dismantling?
could you be dismantling?
could she be dismantling?
could we be dismantling?
could you be dismantling?
could they be dismantling? 	could I have dismantled?
could you have dismantled?
could she have dismantled?
could we have dismantled?
could you have dismantled?
could they have dismantled? 	could I have been dismantling?
could you have been dismantling?
could she have been dismantling?
could we have been dismantling?
could you have been dismantling?
could they have been dismantling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I dismantle?
couldn't you dismantle?
couldn't she dismantle?
couldn't we dismantle?
couldn't you dismantle?
couldn't they dismantle? 	couldn't I be dismantling?
couldn't you be dismantling?
couldn't she be dismantling?
couldn't we be dismantling?
couldn't you be dismantling?
couldn't they be dismantling? 	couldn't I have dismantled?
couldn't you have dismantled?
couldn't she have dismantled?
couldn't we have dismantled?
couldn't you have dismantled?
couldn't they have dismantled? 	couldn't I have been dismantling?
couldn't you have been dismantling?
couldn't she have been dismantling?
couldn't we have been dismantling?
couldn't you have been dismantling?
couldn't they have been dismantling?