may siphon
Regular verb: siphon - siphoned- siphoned

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

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

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

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