can siphon
Regular verb: siphon - siphoned- siphoned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can siphon
you can siphon
she can siphon
we can siphon
you can siphon
they can siphon 	I can be siphoning
you can be siphoning
she can be siphoning
we can be siphoning
you can be siphoning
they can be siphoning	I can have siphoned
you can have siphoned
she can have siphoned
we can have siphoned
you can have siphoned
they can have siphoned	I can have been siphoning
you can have been siphoning
she can have been siphoning
we can have been siphoning
you can have been siphoning
they can have been siphoning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot siphon
you cannot siphon
she cannot siphon
we cannot siphon
you cannot siphon
they cannot siphon 	I cannot be siphoning
you cannot be siphoning
she cannot be siphoning
we cannot be siphoning
you cannot be siphoning
they cannot be siphoning	I cannot have siphoned
you cannot have siphoned
she cannot have siphoned
we cannot have siphoned
you cannot have siphoned
they cannot have siphoned	I cannot have been siphoning
you cannot have been siphoning
she cannot have been siphoning
we cannot have been siphoning
you cannot have been siphoning
they cannot have been siphoning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I siphon?
can you siphon?
can she siphon?
can we siphon?
can you siphon?
can they siphon? 	can I be siphoning?
can you be siphoning?
can she be siphoning?
can we be siphoning?
can you be siphoning?
can they be siphoning? 	can I have siphoned?
can you have siphoned?
can she have siphoned?
can we have siphoned?
can you have siphoned?
can they have siphoned? 	can I have been siphoning?
can you have been siphoning?
can she have been siphoning?
can we have been siphoning?
can you have been siphoning?
can they have been siphoning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not siphon?
can you not siphon?
can she not siphon?
can we not siphon?
can you not siphon?
can they not siphon? 	can I not be siphoning?
can you not be siphoning?
can she not be siphoning?
can we not be siphoning?
can you not be siphoning?
can they not be siphoning? 	can I not have siphoned?
can you not have siphoned?
can she not have siphoned?
can we not have siphoned?
can you not have siphoned?
can they not have siphoned? 	can I not have been siphoning?
can you not have been siphoning?
can she not have been siphoning?
can we not have been siphoning?
can you not have been siphoning?
can they not have been siphoning?