should suffocate
Regular verb: suffocate - suffocated- suffocated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd suffocate
you'd suffocate
he'd suffocate
we'd suffocate
you'd suffocate
they'd suffocate 	I'd be suffocating
you'd be suffocating
he'd be suffocating
we'd be suffocating
you'd be suffocating
they'd be suffocating	I should've suffocated
you should've suffocated
he should've suffocated
we should've suffocated
you should've suffocated
they should've suffocated	I should've been suffocating
you should've been suffocating
he should've been suffocating
we should've been suffocating
you should've been suffocating
they should've been suffocating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't suffocate
you shouldn't suffocate
he shouldn't suffocate
we shouldn't suffocate
you shouldn't suffocate
they shouldn't suffocate 	I shouldn't be suffocating
you shouldn't be suffocating
he shouldn't be suffocating
we shouldn't be suffocating
you shouldn't be suffocating
they shouldn't be suffocating	I shouldn't have suffocated
you shouldn't have suffocated
he shouldn't have suffocated
we shouldn't have suffocated
you shouldn't have suffocated
they shouldn't have suffocated	I shouldn't have been suffocating
you shouldn't have been suffocating
he shouldn't have been suffocating
we shouldn't have been suffocating
you shouldn't have been suffocating
they shouldn't have been suffocating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I suffocate?
should you suffocate?
should he suffocate?
should we suffocate?
should you suffocate?
should they suffocate? 	should I be suffocating?
should you be suffocating?
should he be suffocating?
should we be suffocating?
should you be suffocating?
should they be suffocating? 	should I have suffocated?
should you have suffocated?
should he have suffocated?
should we have suffocated?
should you have suffocated?
should they have suffocated? 	should I have been suffocating?
should you have been suffocating?
should he have been suffocating?
should we have been suffocating?
should you have been suffocating?
should they have been suffocating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I suffocate?
shouldn't you suffocate?
shouldn't he suffocate?
shouldn't we suffocate?
shouldn't you suffocate?
shouldn't they suffocate? 	shouldn't I be suffocating?
shouldn't you be suffocating?
shouldn't he be suffocating?
shouldn't we be suffocating?
shouldn't you be suffocating?
shouldn't they be suffocating? 	shouldn't I have suffocated?
shouldn't you have suffocated?
shouldn't he have suffocated?
shouldn't we have suffocated?
shouldn't you have suffocated?
shouldn't they have suffocated? 	shouldn't I have been suffocating?
shouldn't you have been suffocating?
shouldn't he have been suffocating?
shouldn't we have been suffocating?
shouldn't you have been suffocating?
shouldn't they have been suffocating?