could program
Regular verb: program - programmed- programmed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could program
you could program
she could program
we could program
you could program
they could program 	I could be programming
you could be programming
she could be programming
we could be programming
you could be programming
they could be programming	I could have programmed
you could have programmed
she could have programmed
we could have programmed
you could have programmed
they could have programmed	I could have been programming
you could have been programming
she could have been programming
we could have been programming
you could have been programming
they could have been programming	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't program
you couldn't program
she couldn't program
we couldn't program
you couldn't program
they couldn't program 	I couldn't be programming
you couldn't be programming
she couldn't be programming
we couldn't be programming
you couldn't be programming
they couldn't be programming	I couldn't have programmed
you couldn't have programmed
she couldn't have programmed
we couldn't have programmed
you couldn't have programmed
they couldn't have programmed	I couldn't have been programming
you couldn't have been programming
she couldn't have been programming
we couldn't have been programming
you couldn't have been programming
they couldn't have been programming	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I program?
could you program?
could she program?
could we program?
could you program?
could they program? 	could I be programming?
could you be programming?
could she be programming?
could we be programming?
could you be programming?
could they be programming? 	could I have programmed?
could you have programmed?
could she have programmed?
could we have programmed?
could you have programmed?
could they have programmed? 	could I have been programming?
could you have been programming?
could she have been programming?
could we have been programming?
could you have been programming?
could they have been programming? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I program?
couldn't you program?
couldn't she program?
couldn't we program?
couldn't you program?
couldn't they program? 	couldn't I be programming?
couldn't you be programming?
couldn't she be programming?
couldn't we be programming?
couldn't you be programming?
couldn't they be programming? 	couldn't I have programmed?
couldn't you have programmed?
couldn't she have programmed?
couldn't we have programmed?
couldn't you have programmed?
couldn't they have programmed? 	couldn't I have been programming?
couldn't you have been programming?
couldn't she have been programming?
couldn't we have been programming?
couldn't you have been programming?
couldn't they have been programming?