English verb conjugation
COULD PURFLE

Regular verb: purfle - purfled - purfled

Affirmation

Simple form	V-ing form
I could purfle you could purfle he could purfle we could purfle you could purfle they could purfle	I could be purfling you could be purfling he could be purfling we could be purfling you could be purfling they could be purfling
Perfect	V-ing perfect
I could have purfled you could have purfled he could have purfled we could have purfled you could have purfled they could have purfled	I could have been purfling you could have been purfling he could have been purfling we could have been purfling you could have been purfling they could have been purfling

Negation

Simple form	V-ing form
I could not purfle you could not purfle he could not purfle we could not purfle you could not purfle they could not purfle	I could not be purfling you could not be purfling he could not be purfling we could not be purfling you could not be purfling they could not be purfling
Perfect	V-ing perfect
I could not have purfled you could not have purfled he could not have purfled we could not have purfled you could not have purfled they could not have purfled	I could not have been purfling you could not have been purfling he could not have been purfling we could not have been purfling you could not have been purfling they could not have been purfling

Interrogative form

Simple form	V-ing form
could I purfle? could you purfle? could he purfle? could we purfle? could you purfle? could they purfle?	could I be purfling? could you be purfling? could he be purfling? could we be purfling? could you be purfling? could they be purfling?
Perfect	V-ing perfect
could I have purfled? could you have purfled? could he have purfled? could we have purfled? could you have purfled? could they have purfled?	could I have been purfling? could you have been purfling? could he have been purfling? could we have been purfling? could you have been purfling? could they have been purfling?

Interro-negative form

Simple form	V-ing form
could I not purfle? could you not purfle? could he not purfle? could we not purfle? could you not purfle? could they not purfle?	could I not be purfling? could you not be purfling? could he not be purfling? could we not be purfling? could you not be purfling? could they not be purfling?
Perfect	V-ing perfect
could I not have purfled? could you not have purfled? could he not have purfled? could we not have purfled? could you not have purfled? could they not have purfled?	could I not have been purfling? could you not have been purfling? could he not have been purfling? could we not have been purfling? could you not have been purfling? could they not have been purfling?