English verb conjugation
COULD PRINK

Regular verb: prink - prinked - prinked

Affirmation

Simple form	V-ing form
I could prink you could prink he could prink we could prink you could prink they could prink	I could be prinking you could be prinking he could be prinking we could be prinking you could be prinking they could be prinking
Perfect	V-ing perfect
I could have prinked you could have prinked he could have prinked we could have prinked you could have prinked they could have prinked	I could have been prinking you could have been prinking he could have been prinking we could have been prinking you could have been prinking they could have been prinking

Negation

Simple form	V-ing form
I could not prink you could not prink he could not prink we could not prink you could not prink they could not prink	I could not be prinking you could not be prinking he could not be prinking we could not be prinking you could not be prinking they could not be prinking
Perfect	V-ing perfect
I could not have prinked you could not have prinked he could not have prinked we could not have prinked you could not have prinked they could not have prinked	I could not have been prinking you could not have been prinking he could not have been prinking we could not have been prinking you could not have been prinking they could not have been prinking

Interrogative form

Simple form	V-ing form
could I prink? could you prink? could he prink? could we prink? could you prink? could they prink?	could I be prinking? could you be prinking? could he be prinking? could we be prinking? could you be prinking? could they be prinking?
Perfect	V-ing perfect
could I have prinked? could you have prinked? could he have prinked? could we have prinked? could you have prinked? could they have prinked?	could I have been prinking? could you have been prinking? could he have been prinking? could we have been prinking? could you have been prinking? could they have been prinking?

Interro-negative form

Simple form	V-ing form
could I not prink? could you not prink? could he not prink? could we not prink? could you not prink? could they not prink?	could I not be prinking? could you not be prinking? could he not be prinking? could we not be prinking? could you not be prinking? could they not be prinking?
Perfect	V-ing perfect
could I not have prinked? could you not have prinked? could he not have prinked? could we not have prinked? could you not have prinked? could they not have prinked?	could I not have been prinking? could you not have been prinking? could he not have been prinking? could we not have been prinking? could you not have been prinking? could they not have been prinking?