could defence
Regular verb: defence - defenced- defenced

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could defence
you could defence
she could defence
we could defence
you could defence
they could defence 	I could be defencing
you could be defencing
she could be defencing
we could be defencing
you could be defencing
they could be defencing	I could have defenced
you could have defenced
she could have defenced
we could have defenced
you could have defenced
they could have defenced	I could have been defencing
you could have been defencing
she could have been defencing
we could have been defencing
you could have been defencing
they could have been defencing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't defence
you couldn't defence
she couldn't defence
we couldn't defence
you couldn't defence
they couldn't defence 	I couldn't be defencing
you couldn't be defencing
she couldn't be defencing
we couldn't be defencing
you couldn't be defencing
they couldn't be defencing	I couldn't have defenced
you couldn't have defenced
she couldn't have defenced
we couldn't have defenced
you couldn't have defenced
they couldn't have defenced	I couldn't have been defencing
you couldn't have been defencing
she couldn't have been defencing
we couldn't have been defencing
you couldn't have been defencing
they couldn't have been defencing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I defence?
could you defence?
could she defence?
could we defence?
could you defence?
could they defence? 	could I be defencing?
could you be defencing?
could she be defencing?
could we be defencing?
could you be defencing?
could they be defencing? 	could I have defenced?
could you have defenced?
could she have defenced?
could we have defenced?
could you have defenced?
could they have defenced? 	could I have been defencing?
could you have been defencing?
could she have been defencing?
could we have been defencing?
could you have been defencing?
could they have been defencing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I defence?
couldn't you defence?
couldn't she defence?
couldn't we defence?
couldn't you defence?
couldn't they defence? 	couldn't I be defencing?
couldn't you be defencing?
couldn't she be defencing?
couldn't we be defencing?
couldn't you be defencing?
couldn't they be defencing? 	couldn't I have defenced?
couldn't you have defenced?
couldn't she have defenced?
couldn't we have defenced?
couldn't you have defenced?
couldn't they have defenced? 	couldn't I have been defencing?
couldn't you have been defencing?
couldn't she have been defencing?
couldn't we have been defencing?
couldn't you have been defencing?
couldn't they have been defencing?