English verb conjugation
SHOULD SIRE

Regular verb: sire - sired - sired

Affirmation

Simple form	V-ing form
I'd sire you'd sire he'd sire we'd sire you'd sire they'd sire	I'd be siring you'd be siring he'd be siring we'd be siring you'd be siring they'd be siring
Perfect	V-ing perfect
I should've sired you should've sired he should've sired we should've sired you should've sired they should've sired	I should've been siring you should've been siring he should've been siring we should've been siring you should've been siring they should've been siring

Negation

Simple form	V-ing form
I shouldn't sire you shouldn't sire he shouldn't sire we shouldn't sire you shouldn't sire they shouldn't sire	I shouldn't be siring you shouldn't be siring he shouldn't be siring we shouldn't be siring you shouldn't be siring they shouldn't be siring
Perfect	V-ing perfect
I shouldn't have sired you shouldn't have sired he shouldn't have sired we shouldn't have sired you shouldn't have sired they shouldn't have sired	I shouldn't have been siring you shouldn't have been siring he shouldn't have been siring we shouldn't have been siring you shouldn't have been siring they shouldn't have been siring

Interrogative form

Simple form	V-ing form
should I sire? should you sire? should he sire? should we sire? should you sire? should they sire?	should I be siring? should you be siring? should he be siring? should we be siring? should you be siring? should they be siring?
Perfect	V-ing perfect
should I have sired? should you have sired? should he have sired? should we have sired? should you have sired? should they have sired?	should I have been siring? should you have been siring? should he have been siring? should we have been siring? should you have been siring? should they have been siring?

Interro-negative form

Simple form	V-ing form
shouldn't I sire? shouldn't you sire? shouldn't he sire? shouldn't we sire? shouldn't you sire? shouldn't they sire?	shouldn't I be siring? shouldn't you be siring? shouldn't he be siring? shouldn't we be siring? shouldn't you be siring? shouldn't they be siring?
Perfect	V-ing perfect
shouldn't I have sired? shouldn't you have sired? shouldn't he have sired? shouldn't we have sired? shouldn't you have sired? shouldn't they have sired?	shouldn't I have been siring? shouldn't you have been siring? shouldn't he have been siring? shouldn't we have been siring? shouldn't you have been siring? shouldn't they have been siring?