could encode
Regular verb: encode - encoded- encoded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could encode
you could encode
she could encode
we could encode
you could encode
they could encode 	I could be encoding
you could be encoding
she could be encoding
we could be encoding
you could be encoding
they could be encoding	I could have encoded
you could have encoded
she could have encoded
we could have encoded
you could have encoded
they could have encoded	I could have been encoding
you could have been encoding
she could have been encoding
we could have been encoding
you could have been encoding
they could have been encoding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not encode
you could not encode
she could not encode
we could not encode
you could not encode
they could not encode 	I could not be encoding
you could not be encoding
she could not be encoding
we could not be encoding
you could not be encoding
they could not be encoding	I could not have encoded
you could not have encoded
she could not have encoded
we could not have encoded
you could not have encoded
they could not have encoded	I could not have been encoding
you could not have been encoding
she could not have been encoding
we could not have been encoding
you could not have been encoding
they could not have been encoding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I encode?
could you encode?
could she encode?
could we encode?
could you encode?
could they encode? 	could I be encoding?
could you be encoding?
could she be encoding?
could we be encoding?
could you be encoding?
could they be encoding? 	could I have encoded?
could you have encoded?
could she have encoded?
could we have encoded?
could you have encoded?
could they have encoded? 	could I have been encoding?
could you have been encoding?
could she have been encoding?
could we have been encoding?
could you have been encoding?
could they have been encoding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not encode?
could you not encode?
could she not encode?
could we not encode?
could you not encode?
could they not encode? 	could I not be encoding?
could you not be encoding?
could she not be encoding?
could we not be encoding?
could you not be encoding?
could they not be encoding? 	could I not have encoded?
could you not have encoded?
could she not have encoded?
could we not have encoded?
could you not have encoded?
could they not have encoded? 	could I not have been encoding?
could you not have been encoding?
could she not have been encoding?
could we not have been encoding?
could you not have been encoding?
could they not have been encoding?