should sire
Regular verb: sire - sired- sired

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd sire
you'd sire
she'd sire
we'd sire
you'd sire
they'd sire 	I'd be siring
you'd be siring
she'd be siring
we'd be siring
you'd be siring
they'd be siring	I should've sired
you should've sired
she 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
she 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 	Perfect 	V-ing perfect 	
I shouldn't sire
you shouldn't sire
she 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
she shouldn't be siring
we shouldn't be siring
you shouldn't be siring
they shouldn't be siring	I shouldn't have sired
you shouldn't have sired
she 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
she 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 	Perfect 	V-ing perfect 	
should I sire?
should you sire?
should she sire?
should we sire?
should you sire?
should they sire? 	should I be siring?
should you be siring?
should she be siring?
should we be siring?
should you be siring?
should they be siring? 	should I have sired?
should you have sired?
should she 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 she 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 	Perfect 	V-ing perfect 	
shouldn't I sire?
shouldn't you sire?
shouldn't she 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 she be siring?
shouldn't we be siring?
shouldn't you be siring?
shouldn't they be siring? 	shouldn't I have sired?
shouldn't you have sired?
shouldn't she 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 she have been siring?
shouldn't we have been siring?
shouldn't you have been siring?
shouldn't they have been siring?