could code
Regular verb: code - coded- coded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could code
you could code
she could code
we could code
you could code
they could code 	I could be coding
you could be coding
she could be coding
we could be coding
you could be coding
they could be coding	I could have coded
you could have coded
she could have coded
we could have coded
you could have coded
they could have coded	I could have been coding
you could have been coding
she could have been coding
we could have been coding
you could have been coding
they could have been coding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not code
you could not code
she could not code
we could not code
you could not code
they could not code 	I could not be coding
you could not be coding
she could not be coding
we could not be coding
you could not be coding
they could not be coding	I could not have coded
you could not have coded
she could not have coded
we could not have coded
you could not have coded
they could not have coded	I could not have been coding
you could not have been coding
she could not have been coding
we could not have been coding
you could not have been coding
they could not have been coding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I code?
could you code?
could she code?
could we code?
could you code?
could they code? 	could I be coding?
could you be coding?
could she be coding?
could we be coding?
could you be coding?
could they be coding? 	could I have coded?
could you have coded?
could she have coded?
could we have coded?
could you have coded?
could they have coded? 	could I have been coding?
could you have been coding?
could she have been coding?
could we have been coding?
could you have been coding?
could they have been coding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not code?
could you not code?
could she not code?
could we not code?
could you not code?
could they not code? 	could I not be coding?
could you not be coding?
could she not be coding?
could we not be coding?
could you not be coding?
could they not be coding? 	could I not have coded?
could you not have coded?
could she not have coded?
could we not have coded?
could you not have coded?
could they not have coded? 	could I not have been coding?
could you not have been coding?
could she not have been coding?
could we not have been coding?
could you not have been coding?
could they not have been coding?