English verb conjugation
COULD PINK

Regular verb: pink - pinked - pinked

Affirmation

Simple form	V-ing form
I could pink you could pink he could pink we could pink you could pink they could pink	I could be pinking you could be pinking he could be pinking we could be pinking you could be pinking they could be pinking
Perfect	V-ing perfect
I could have pinked you could have pinked he could have pinked we could have pinked you could have pinked they could have pinked	I could have been pinking you could have been pinking he could have been pinking we could have been pinking you could have been pinking they could have been pinking

Negation

Simple form	V-ing form
I couldn't pink you couldn't pink he couldn't pink we couldn't pink you couldn't pink they couldn't pink	I couldn't be pinking you couldn't be pinking he couldn't be pinking we couldn't be pinking you couldn't be pinking they couldn't be pinking
Perfect	V-ing perfect
I couldn't have pinked you couldn't have pinked he couldn't have pinked we couldn't have pinked you couldn't have pinked they couldn't have pinked	I couldn't have been pinking you couldn't have been pinking he couldn't have been pinking we couldn't have been pinking you couldn't have been pinking they couldn't have been pinking

Interrogative form

Simple form	V-ing form
could I pink? could you pink? could he pink? could we pink? could you pink? could they pink?	could I be pinking? could you be pinking? could he be pinking? could we be pinking? could you be pinking? could they be pinking?
Perfect	V-ing perfect
could I have pinked? could you have pinked? could he have pinked? could we have pinked? could you have pinked? could they have pinked?	could I have been pinking? could you have been pinking? could he have been pinking? could we have been pinking? could you have been pinking? could they have been pinking?

Interro-negative form

Simple form	V-ing form
couldn't I pink? couldn't you pink? couldn't he pink? couldn't we pink? couldn't you pink? couldn't they pink?	couldn't I be pinking? couldn't you be pinking? couldn't he be pinking? couldn't we be pinking? couldn't you be pinking? couldn't they be pinking?
Perfect	V-ing perfect
couldn't I have pinked? couldn't you have pinked? couldn't he have pinked? couldn't we have pinked? couldn't you have pinked? couldn't they have pinked?	couldn't I have been pinking? couldn't you have been pinking? couldn't he have been pinking? couldn't we have been pinking? couldn't you have been pinking? couldn't they have been pinking?