could revamp
Regular verb: revamp - revamped- revamped

Affirmation 	
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I could revamp
you could revamp
she could revamp
we could revamp
you could revamp
they could revamp 	I could be revamping
you could be revamping
she could be revamping
we could be revamping
you could be revamping
they could be revamping	I could have revamped
you could have revamped
she could have revamped
we could have revamped
you could have revamped
they could have revamped	I could have been revamping
you could have been revamping
she could have been revamping
we could have been revamping
you could have been revamping
they could have been revamping	

Negation 	
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I couldn't revamp
you couldn't revamp
she couldn't revamp
we couldn't revamp
you couldn't revamp
they couldn't revamp 	I couldn't be revamping
you couldn't be revamping
she couldn't be revamping
we couldn't be revamping
you couldn't be revamping
they couldn't be revamping	I couldn't have revamped
you couldn't have revamped
she couldn't have revamped
we couldn't have revamped
you couldn't have revamped
they couldn't have revamped	I couldn't have been revamping
you couldn't have been revamping
she couldn't have been revamping
we couldn't have been revamping
you couldn't have been revamping
they couldn't have been revamping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I revamp?
could you revamp?
could she revamp?
could we revamp?
could you revamp?
could they revamp? 	could I be revamping?
could you be revamping?
could she be revamping?
could we be revamping?
could you be revamping?
could they be revamping? 	could I have revamped?
could you have revamped?
could she have revamped?
could we have revamped?
could you have revamped?
could they have revamped? 	could I have been revamping?
could you have been revamping?
could she have been revamping?
could we have been revamping?
could you have been revamping?
could they have been revamping? 	

Interro-negative form 	
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couldn't I revamp?
couldn't you revamp?
couldn't she revamp?
couldn't we revamp?
couldn't you revamp?
couldn't they revamp? 	couldn't I be revamping?
couldn't you be revamping?
couldn't she be revamping?
couldn't we be revamping?
couldn't you be revamping?
couldn't they be revamping? 	couldn't I have revamped?
couldn't you have revamped?
couldn't she have revamped?
couldn't we have revamped?
couldn't you have revamped?
couldn't they have revamped? 	couldn't I have been revamping?
couldn't you have been revamping?
couldn't she have been revamping?
couldn't we have been revamping?
couldn't you have been revamping?
couldn't they have been revamping?