could liberate
Regular verb: liberate - liberated- liberated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could liberate
you could liberate
she could liberate
we could liberate
you could liberate
they could liberate 	I could be liberating
you could be liberating
she could be liberating
we could be liberating
you could be liberating
they could be liberating	I could have liberated
you could have liberated
she could have liberated
we could have liberated
you could have liberated
they could have liberated	I could have been liberating
you could have been liberating
she could have been liberating
we could have been liberating
you could have been liberating
they could have been liberating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't liberate
you couldn't liberate
she couldn't liberate
we couldn't liberate
you couldn't liberate
they couldn't liberate 	I couldn't be liberating
you couldn't be liberating
she couldn't be liberating
we couldn't be liberating
you couldn't be liberating
they couldn't be liberating	I couldn't have liberated
you couldn't have liberated
she couldn't have liberated
we couldn't have liberated
you couldn't have liberated
they couldn't have liberated	I couldn't have been liberating
you couldn't have been liberating
she couldn't have been liberating
we couldn't have been liberating
you couldn't have been liberating
they couldn't have been liberating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I liberate?
could you liberate?
could she liberate?
could we liberate?
could you liberate?
could they liberate? 	could I be liberating?
could you be liberating?
could she be liberating?
could we be liberating?
could you be liberating?
could they be liberating? 	could I have liberated?
could you have liberated?
could she have liberated?
could we have liberated?
could you have liberated?
could they have liberated? 	could I have been liberating?
could you have been liberating?
could she have been liberating?
could we have been liberating?
could you have been liberating?
could they have been liberating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I liberate?
couldn't you liberate?
couldn't she liberate?
couldn't we liberate?
couldn't you liberate?
couldn't they liberate? 	couldn't I be liberating?
couldn't you be liberating?
couldn't she be liberating?
couldn't we be liberating?
couldn't you be liberating?
couldn't they be liberating? 	couldn't I have liberated?
couldn't you have liberated?
couldn't she have liberated?
couldn't we have liberated?
couldn't you have liberated?
couldn't they have liberated? 	couldn't I have been liberating?
couldn't you have been liberating?
couldn't she have been liberating?
couldn't we have been liberating?
couldn't you have been liberating?
couldn't they have been liberating?