English verb conjugation
COULD CODE

Regular verb: code - coded - coded

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
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
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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?