should sium
Regular verb: sium - siumed- siumed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should sium
you should sium
he should sium
we should sium
you should sium
they should sium 	I should be siuming
you should be siuming
he should be siuming
we should be siuming
you should be siuming
they should be siuming	I should have siumed
you should have siumed
he should have siumed
we should have siumed
you should have siumed
they should have siumed	I should have been siuming
you should have been siuming
he should have been siuming
we should have been siuming
you should have been siuming
they should have been siuming	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not sium
you should not sium
he should not sium
we should not sium
you should not sium
they should not sium 	I should not be siuming
you should not be siuming
he should not be siuming
we should not be siuming
you should not be siuming
they should not be siuming	I should not have siumed
you should not have siumed
he should not have siumed
we should not have siumed
you should not have siumed
they should not have siumed	I should not have been siuming
you should not have been siuming
he should not have been siuming
we should not have been siuming
you should not have been siuming
they should not have been siuming	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I sium?
should you sium?
should he sium?
should we sium?
should you sium?
should they sium? 	should I be siuming?
should you be siuming?
should he be siuming?
should we be siuming?
should you be siuming?
should they be siuming? 	should I have siumed?
should you have siumed?
should he have siumed?
should we have siumed?
should you have siumed?
should they have siumed? 	should I have been siuming?
should you have been siuming?
should he have been siuming?
should we have been siuming?
should you have been siuming?
should they have been siuming? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not sium?
should you not sium?
should he not sium?
should we not sium?
should you not sium?
should they not sium? 	should I not be siuming?
should you not be siuming?
should he not be siuming?
should we not be siuming?
should you not be siuming?
should they not be siuming? 	should I not have siumed?
should you not have siumed?
should he not have siumed?
should we not have siumed?
should you not have siumed?
should they not have siumed? 	should I not have been siuming?
should you not have been siuming?
should he not have been siuming?
should we not have been siuming?
should you not have been siuming?
should they not have been siuming?