could siege
Regular verb: siege - sieged- sieged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could siege
you could siege
she could siege
we could siege
you could siege
they could siege 	I could be sieging
you could be sieging
she could be sieging
we could be sieging
you could be sieging
they could be sieging	I could have sieged
you could have sieged
she could have sieged
we could have sieged
you could have sieged
they could have sieged	I could have been sieging
you could have been sieging
she could have been sieging
we could have been sieging
you could have been sieging
they could have been sieging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't siege
you couldn't siege
she couldn't siege
we couldn't siege
you couldn't siege
they couldn't siege 	I couldn't be sieging
you couldn't be sieging
she couldn't be sieging
we couldn't be sieging
you couldn't be sieging
they couldn't be sieging	I couldn't have sieged
you couldn't have sieged
she couldn't have sieged
we couldn't have sieged
you couldn't have sieged
they couldn't have sieged	I couldn't have been sieging
you couldn't have been sieging
she couldn't have been sieging
we couldn't have been sieging
you couldn't have been sieging
they couldn't have been sieging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I siege?
could you siege?
could she siege?
could we siege?
could you siege?
could they siege? 	could I be sieging?
could you be sieging?
could she be sieging?
could we be sieging?
could you be sieging?
could they be sieging? 	could I have sieged?
could you have sieged?
could she have sieged?
could we have sieged?
could you have sieged?
could they have sieged? 	could I have been sieging?
could you have been sieging?
could she have been sieging?
could we have been sieging?
could you have been sieging?
could they have been sieging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I siege?
couldn't you siege?
couldn't she siege?
couldn't we siege?
couldn't you siege?
couldn't they siege? 	couldn't I be sieging?
couldn't you be sieging?
couldn't she be sieging?
couldn't we be sieging?
couldn't you be sieging?
couldn't they be sieging? 	couldn't I have sieged?
couldn't you have sieged?
couldn't she have sieged?
couldn't we have sieged?
couldn't you have sieged?
couldn't they have sieged? 	couldn't I have been sieging?
couldn't you have been sieging?
couldn't she have been sieging?
couldn't we have been sieging?
couldn't you have been sieging?
couldn't they have been sieging?