I'd be suffocating you'd be suffocating she'd be suffocating we'd be suffocating you'd be suffocating they'd be suffocating
Perfect
I should've suffocated you should've suffocated she should've suffocated we should've suffocated you should've suffocated they should've suffocated
V-ing perfect
I should've been suffocating you should've been suffocating she should've been suffocating we should've been suffocating you should've been suffocating they should've been suffocating
Negation
Simple form
I shouldn't suffocate you shouldn't suffocate she shouldn't suffocate we shouldn't suffocate you shouldn't suffocate they shouldn't suffocate
V-ing form
I shouldn't be suffocating you shouldn't be suffocating she shouldn't be suffocating we shouldn't be suffocating you shouldn't be suffocating they shouldn't be suffocating
Perfect
I shouldn't have suffocated you shouldn't have suffocated she shouldn't have suffocated we shouldn't have suffocated you shouldn't have suffocated they shouldn't have suffocated
V-ing perfect
I shouldn't have been suffocating you shouldn't have been suffocating she 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
should I suffocate? should you suffocate? should she suffocate? should we suffocate? should you suffocate? should they suffocate?
V-ing form
should I be suffocating? should you be suffocating? should she be suffocating? should we be suffocating? should you be suffocating? should they be suffocating?
Perfect
should I have suffocated? should you have suffocated? should she have suffocated? should we have suffocated? should you have suffocated? should they have suffocated?
V-ing perfect
should I have been suffocating? should you have been suffocating? should she have been suffocating? should we have been suffocating? should you have been suffocating? should they have been suffocating?
Interro-negative form
Simple form
shouldn't I suffocate? shouldn't you suffocate? shouldn't she suffocate? shouldn't we suffocate? shouldn't you suffocate? shouldn't they suffocate?
V-ing form
shouldn't I be suffocating? shouldn't you be suffocating? shouldn't she be suffocating? shouldn't we be suffocating? shouldn't you be suffocating? shouldn't they be suffocating?
Perfect
shouldn't I have suffocated? shouldn't you have suffocated? shouldn't she have suffocated? shouldn't we have suffocated? shouldn't you have suffocated? shouldn't they have suffocated?
V-ing perfect
shouldn't I have been suffocating? shouldn't you have been suffocating? shouldn't she have been suffocating? shouldn't we have been suffocating? shouldn't you have been suffocating? shouldn't they have been suffocating?