English verb conjugation
CAN SNIFFER

Regular verb: sniffer - sniffered - sniffered

Warning, this verb may not exist. Conjugation is given as example.

Affirmation

Simple form	V-ing form
I can sniffer you can sniffer he can sniffer we can sniffer you can sniffer they can sniffer	I can be sniffering you can be sniffering he can be sniffering we can be sniffering you can be sniffering they can be sniffering
Perfect	V-ing perfect
I can have sniffered you can have sniffered he can have sniffered we can have sniffered you can have sniffered they can have sniffered	I can have been sniffering you can have been sniffering he can have been sniffering we can have been sniffering you can have been sniffering they can have been sniffering

Negation

Simple form	V-ing form
I cannot sniffer you cannot sniffer he cannot sniffer we cannot sniffer you cannot sniffer they cannot sniffer	I cannot be sniffering you cannot be sniffering he cannot be sniffering we cannot be sniffering you cannot be sniffering they cannot be sniffering
Perfect	V-ing perfect
I cannot have sniffered you cannot have sniffered he cannot have sniffered we cannot have sniffered you cannot have sniffered they cannot have sniffered	I cannot have been sniffering you cannot have been sniffering he cannot have been sniffering we cannot have been sniffering you cannot have been sniffering they cannot have been sniffering

Interrogative form

Simple form	V-ing form
can I sniffer? can you sniffer? can he sniffer? can we sniffer? can you sniffer? can they sniffer?	can I be sniffering? can you be sniffering? can he be sniffering? can we be sniffering? can you be sniffering? can they be sniffering?
Perfect	V-ing perfect
can I have sniffered? can you have sniffered? can he have sniffered? can we have sniffered? can you have sniffered? can they have sniffered?	can I have been sniffering? can you have been sniffering? can he have been sniffering? can we have been sniffering? can you have been sniffering? can they have been sniffering?

Interro-negative form

Simple form	V-ing form
can I not sniffer? can you not sniffer? can he not sniffer? can we not sniffer? can you not sniffer? can they not sniffer?	can I not be sniffering? can you not be sniffering? can he not be sniffering? can we not be sniffering? can you not be sniffering? can they not be sniffering?
Perfect	V-ing perfect
can I not have sniffered? can you not have sniffered? can he not have sniffered? can we not have sniffered? can you not have sniffered? can they not have sniffered?	can I not have been sniffering? can you not have been sniffering? can he not have been sniffering? can we not have been sniffering? can you not have been sniffering? can they not have been sniffering?