ought to siphon
Regular verb: siphon - siphoned- siphoned

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

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

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

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