ought to sium
Regular verb: sium - siumed- siumed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to sium
you ought to sium
she ought to sium
we ought to sium
you ought to sium
they ought to sium 	I ought to be siuming
you ought to be siuming
she ought to be siuming
we ought to be siuming
you ought to be siuming
they ought to be siuming	I ought to have siumed
you ought to have siumed
she ought to have siumed
we ought to have siumed
you ought to have siumed
they ought to have siumed	I ought to have been siuming
you ought to have been siuming
she ought to have been siuming
we ought to have been siuming
you ought to have been siuming
they ought to have been siuming	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to sium
you oughtn't to sium
she oughtn't to sium
we oughtn't to sium
you oughtn't to sium
they oughtn't to sium 	I oughtn't to be siuming
you oughtn't to be siuming
she oughtn't to be siuming
we oughtn't to be siuming
you oughtn't to be siuming
they oughtn't to be siuming	I oughtn't to have siumed
you oughtn't to have siumed
she oughtn't to have siumed
we oughtn't to have siumed
you oughtn't to have siumed
they oughtn't to have siumed	I oughtn't to have been siuming
you oughtn't to have been siuming
she oughtn't to have been siuming
we oughtn't to have been siuming
you oughtn't to have been siuming
they oughtn't to have been siuming	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I sium?
ought to you sium?
ought to she sium?
ought to we sium?
ought to you sium?
ought to they sium? 	ought to I be siuming?
ought to you be siuming?
ought to she be siuming?
ought to we be siuming?
ought to you be siuming?
ought to they be siuming? 	ought to I have siumed?
ought to you have siumed?
ought to she have siumed?
ought to we have siumed?
ought to you have siumed?
ought to they have siumed? 	ought to I have been siuming?
ought to you have been siuming?
ought to she have been siuming?
ought to we have been siuming?
ought to you have been siuming?
ought to they have been siuming? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to sium?
oughtn't you to sium?
oughtn't she to sium?
oughtn't we to sium?
oughtn't you to sium?
oughtn't they to sium? 	oughtn't I to be siuming?
oughtn't you to be siuming?
oughtn't she to be siuming?
oughtn't we to be siuming?
oughtn't you to be siuming?
oughtn't they to be siuming? 	oughtn't I to have siumed?
oughtn't you to have siumed?
oughtn't she to have siumed?
oughtn't we to have siumed?
oughtn't you to have siumed?
oughtn't they to have siumed? 	oughtn't I to have been siuming?
oughtn't you to have been siuming?
oughtn't she to have been siuming?
oughtn't we to have been siuming?
oughtn't you to have been siuming?
oughtn't they to have been siuming?