could specify
Regular verb: specify - specified- specified

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could specify
you could specify
he could specify
we could specify
you could specify
they could specify 	I could be specifying
you could be specifying
he could be specifying
we could be specifying
you could be specifying
they could be specifying	I could have specified
you could have specified
he could have specified
we could have specified
you could have specified
they could have specified	I could have been specifying
you could have been specifying
he could have been specifying
we could have been specifying
you could have been specifying
they could have been specifying	

Negation 	
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I couldn't specify
you couldn't specify
he couldn't specify
we couldn't specify
you couldn't specify
they couldn't specify 	I couldn't be specifying
you couldn't be specifying
he couldn't be specifying
we couldn't be specifying
you couldn't be specifying
they couldn't be specifying	I couldn't have specified
you couldn't have specified
he couldn't have specified
we couldn't have specified
you couldn't have specified
they couldn't have specified	I couldn't have been specifying
you couldn't have been specifying
he couldn't have been specifying
we couldn't have been specifying
you couldn't have been specifying
they couldn't have been specifying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I specify?
could you specify?
could he specify?
could we specify?
could you specify?
could they specify? 	could I be specifying?
could you be specifying?
could he be specifying?
could we be specifying?
could you be specifying?
could they be specifying? 	could I have specified?
could you have specified?
could he have specified?
could we have specified?
could you have specified?
could they have specified? 	could I have been specifying?
could you have been specifying?
could he have been specifying?
could we have been specifying?
could you have been specifying?
could they have been specifying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I specify?
couldn't you specify?
couldn't he specify?
couldn't we specify?
couldn't you specify?
couldn't they specify? 	couldn't I be specifying?
couldn't you be specifying?
couldn't he be specifying?
couldn't we be specifying?
couldn't you be specifying?
couldn't they be specifying? 	couldn't I have specified?
couldn't you have specified?
couldn't he have specified?
couldn't we have specified?
couldn't you have specified?
couldn't they have specified? 	couldn't I have been specifying?
couldn't you have been specifying?
couldn't he have been specifying?
couldn't we have been specifying?
couldn't you have been specifying?
couldn't they have been specifying?