English verb conjugation
COULD PILFER

Regular verb: pilfer - pilfered - pilfered

Affirmation

Simple form	V-ing form
I could pilfer you could pilfer she could pilfer we could pilfer you could pilfer they could pilfer	I could be pilfering you could be pilfering she could be pilfering we could be pilfering you could be pilfering they could be pilfering
Perfect	V-ing perfect
I could have pilfered you could have pilfered she could have pilfered we could have pilfered you could have pilfered they could have pilfered	I could have been pilfering you could have been pilfering she could have been pilfering we could have been pilfering you could have been pilfering they could have been pilfering

Negation

Simple form	V-ing form
I could not pilfer you could not pilfer she could not pilfer we could not pilfer you could not pilfer they could not pilfer	I could not be pilfering you could not be pilfering she could not be pilfering we could not be pilfering you could not be pilfering they could not be pilfering
Perfect	V-ing perfect
I could not have pilfered you could not have pilfered she could not have pilfered we could not have pilfered you could not have pilfered they could not have pilfered	I could not have been pilfering you could not have been pilfering she could not have been pilfering we could not have been pilfering you could not have been pilfering they could not have been pilfering

Interrogative form

Simple form	V-ing form
could I pilfer? could you pilfer? could she pilfer? could we pilfer? could you pilfer? could they pilfer?	could I be pilfering? could you be pilfering? could she be pilfering? could we be pilfering? could you be pilfering? could they be pilfering?
Perfect	V-ing perfect
could I have pilfered? could you have pilfered? could she have pilfered? could we have pilfered? could you have pilfered? could they have pilfered?	could I have been pilfering? could you have been pilfering? could she have been pilfering? could we have been pilfering? could you have been pilfering? could they have been pilfering?

Interro-negative form

Simple form	V-ing form
could I not pilfer? could you not pilfer? could she not pilfer? could we not pilfer? could you not pilfer? could they not pilfer?	could I not be pilfering? could you not be pilfering? could she not be pilfering? could we not be pilfering? could you not be pilfering? could they not be pilfering?
Perfect	V-ing perfect
could I not have pilfered? could you not have pilfered? could she not have pilfered? could we not have pilfered? could you not have pilfered? could they not have pilfered?	could I not have been pilfering? could you not have been pilfering? could she not have been pilfering? could we not have been pilfering? could you not have been pilfering? could they not have been pilfering?