should underbid
Verbo irregular: underbid - underbid- underbid

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I'd underbid
you'd underbid
he'd underbid
we'd underbid
you'd underbid
they'd underbid 	I'd be underbidding
you'd be underbidding
he'd be underbidding
we'd be underbidding
you'd be underbidding
they'd be underbidding	I should've underbid
you should've underbid
he should've underbid
we should've underbid
you should've underbid
they should've underbid	I should've been underbidding
you should've been underbidding
he should've been underbidding
we should've been underbidding
you should've been underbidding
they should've been underbidding	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shouldn't underbid
you shouldn't underbid
he shouldn't underbid
we shouldn't underbid
you shouldn't underbid
they shouldn't underbid 	I shouldn't be underbidding
you shouldn't be underbidding
he shouldn't be underbidding
we shouldn't be underbidding
you shouldn't be underbidding
they shouldn't be underbidding	I shouldn't have underbid
you shouldn't have underbid
he shouldn't have underbid
we shouldn't have underbid
you shouldn't have underbid
they shouldn't have underbid	I shouldn't have been underbidding
you shouldn't have been underbidding
he shouldn't have been underbidding
we shouldn't have been underbidding
you shouldn't have been underbidding
they shouldn't have been underbidding	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I underbid?
should you underbid?
should he underbid?
should we underbid?
should you underbid?
should they underbid? 	should I be underbidding?
should you be underbidding?
should he be underbidding?
should we be underbidding?
should you be underbidding?
should they be underbidding? 	should I have underbid?
should you have underbid?
should he have underbid?
should we have underbid?
should you have underbid?
should they have underbid? 	should I have been underbidding?
should you have been underbidding?
should he have been underbidding?
should we have been underbidding?
should you have been underbidding?
should they have been underbidding? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shouldn't I underbid?
shouldn't you underbid?
shouldn't he underbid?
shouldn't we underbid?
shouldn't you underbid?
shouldn't they underbid? 	shouldn't I be underbidding?
shouldn't you be underbidding?
shouldn't he be underbidding?
shouldn't we be underbidding?
shouldn't you be underbidding?
shouldn't they be underbidding? 	shouldn't I have underbid?
shouldn't you have underbid?
shouldn't he have underbid?
shouldn't we have underbid?
shouldn't you have underbid?
shouldn't they have underbid? 	shouldn't I have been underbidding?
shouldn't you have been underbidding?
shouldn't he have been underbidding?
shouldn't we have been underbidding?
shouldn't you have been underbidding?
shouldn't they have been underbidding?