could subdue
Regular verb: subdue - subdued- subdued

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could subdue
you could subdue
she could subdue
we could subdue
you could subdue
they could subdue 	I could be subduing
you could be subduing
she could be subduing
we could be subduing
you could be subduing
they could be subduing	I could have subdued
you could have subdued
she could have subdued
we could have subdued
you could have subdued
they could have subdued	I could have been subduing
you could have been subduing
she could have been subduing
we could have been subduing
you could have been subduing
they could have been subduing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not subdue
you could not subdue
she could not subdue
we could not subdue
you could not subdue
they could not subdue 	I could not be subduing
you could not be subduing
she could not be subduing
we could not be subduing
you could not be subduing
they could not be subduing	I could not have subdued
you could not have subdued
she could not have subdued
we could not have subdued
you could not have subdued
they could not have subdued	I could not have been subduing
you could not have been subduing
she could not have been subduing
we could not have been subduing
you could not have been subduing
they could not have been subduing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I subdue?
could you subdue?
could she subdue?
could we subdue?
could you subdue?
could they subdue? 	could I be subduing?
could you be subduing?
could she be subduing?
could we be subduing?
could you be subduing?
could they be subduing? 	could I have subdued?
could you have subdued?
could she have subdued?
could we have subdued?
could you have subdued?
could they have subdued? 	could I have been subduing?
could you have been subduing?
could she have been subduing?
could we have been subduing?
could you have been subduing?
could they have been subduing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not subdue?
could you not subdue?
could she not subdue?
could we not subdue?
could you not subdue?
could they not subdue? 	could I not be subduing?
could you not be subduing?
could she not be subduing?
could we not be subduing?
could you not be subduing?
could they not be subduing? 	could I not have subdued?
could you not have subdued?
could she not have subdued?
could we not have subdued?
could you not have subdued?
could they not have subdued? 	could I not have been subduing?
could you not have been subduing?
could she not have been subduing?
could we not have been subduing?
could you not have been subduing?
could they not have been subduing?