could deliberate
Regular verb: deliberate - deliberated- deliberated

Affirmation 	
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I could deliberate
you could deliberate
she could deliberate
we could deliberate
you could deliberate
they could deliberate 	I could be deliberating
you could be deliberating
she could be deliberating
we could be deliberating
you could be deliberating
they could be deliberating	I could have deliberated
you could have deliberated
she could have deliberated
we could have deliberated
you could have deliberated
they could have deliberated	I could have been deliberating
you could have been deliberating
she could have been deliberating
we could have been deliberating
you could have been deliberating
they could have been deliberating	

Negation 	
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I couldn't deliberate
you couldn't deliberate
she couldn't deliberate
we couldn't deliberate
you couldn't deliberate
they couldn't deliberate 	I couldn't be deliberating
you couldn't be deliberating
she couldn't be deliberating
we couldn't be deliberating
you couldn't be deliberating
they couldn't be deliberating	I couldn't have deliberated
you couldn't have deliberated
she couldn't have deliberated
we couldn't have deliberated
you couldn't have deliberated
they couldn't have deliberated	I couldn't have been deliberating
you couldn't have been deliberating
she couldn't have been deliberating
we couldn't have been deliberating
you couldn't have been deliberating
they couldn't have been deliberating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I deliberate?
could you deliberate?
could she deliberate?
could we deliberate?
could you deliberate?
could they deliberate? 	could I be deliberating?
could you be deliberating?
could she be deliberating?
could we be deliberating?
could you be deliberating?
could they be deliberating? 	could I have deliberated?
could you have deliberated?
could she have deliberated?
could we have deliberated?
could you have deliberated?
could they have deliberated? 	could I have been deliberating?
could you have been deliberating?
could she have been deliberating?
could we have been deliberating?
could you have been deliberating?
could they have been deliberating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I deliberate?
couldn't you deliberate?
couldn't she deliberate?
couldn't we deliberate?
couldn't you deliberate?
couldn't they deliberate? 	couldn't I be deliberating?
couldn't you be deliberating?
couldn't she be deliberating?
couldn't we be deliberating?
couldn't you be deliberating?
couldn't they be deliberating? 	couldn't I have deliberated?
couldn't you have deliberated?
couldn't she have deliberated?
couldn't we have deliberated?
couldn't you have deliberated?
couldn't they have deliberated? 	couldn't I have been deliberating?
couldn't you have been deliberating?
couldn't she have been deliberating?
couldn't we have been deliberating?
couldn't you have been deliberating?
couldn't they have been deliberating?