I can pilfer you can pilfer he can pilfer we can pilfer you can pilfer they can pilfer
V-ing form
I can be pilfering you can be pilfering he can be pilfering we can be pilfering you can be pilfering they can be pilfering
Perfect
I can have pilfered you can have pilfered he can have pilfered we can have pilfered you can have pilfered they can have pilfered
V-ing perfect
I can have been pilfering you can have been pilfering he can have been pilfering we can have been pilfering you can have been pilfering they can have been pilfering
Negation
Simple form
I can't pilfer you can't pilfer he can't pilfer we can't pilfer you can't pilfer they can't pilfer
V-ing form
I can't be pilfering you can't be pilfering he can't be pilfering we can't be pilfering you can't be pilfering they can't be pilfering
Perfect
I can't have pilfered you can't have pilfered he can't have pilfered we can't have pilfered you can't have pilfered they can't have pilfered
V-ing perfect
I can't have been pilfering you can't have been pilfering he can't have been pilfering we can't have been pilfering you can't have been pilfering they can't have been pilfering
Interrogative form
Simple form
can I pilfer? can you pilfer? can he pilfer? can we pilfer? can you pilfer? can they pilfer?
V-ing form
can I be pilfering? can you be pilfering? can he be pilfering? can we be pilfering? can you be pilfering? can they be pilfering?
Perfect
can I have pilfered? can you have pilfered? can he have pilfered? can we have pilfered? can you have pilfered? can they have pilfered?
V-ing perfect
can I have been pilfering? can you have been pilfering? can he have been pilfering? can we have been pilfering? can you have been pilfering? can they have been pilfering?
Interro-negative form
Simple form
can't I pilfer? can't you pilfer? can't he pilfer? can't we pilfer? can't you pilfer? can't they pilfer?
V-ing form
can't I be pilfering? can't you be pilfering? can't he be pilfering? can't we be pilfering? can't you be pilfering? can't they be pilfering?
Perfect
can't I have pilfered? can't you have pilfered? can't he have pilfered? can't we have pilfered? can't you have pilfered? can't they have pilfered?
V-ing perfect
can't I have been pilfering? can't you have been pilfering? can't he have been pilfering? can't we have been pilfering? can't you have been pilfering? can't they have been pilfering?