should contend
Verbo regular: contend - contended- contended

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I'd contend
you'd contend
he'd contend
we'd contend
you'd contend
they'd contend 	I'd be contending
you'd be contending
he'd be contending
we'd be contending
you'd be contending
they'd be contending	I should've contended
you should've contended
he should've contended
we should've contended
you should've contended
they should've contended	I should've been contending
you should've been contending
he should've been contending
we should've been contending
you should've been contending
they should've been contending	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shouldn't contend
you shouldn't contend
he shouldn't contend
we shouldn't contend
you shouldn't contend
they shouldn't contend 	I shouldn't be contending
you shouldn't be contending
he shouldn't be contending
we shouldn't be contending
you shouldn't be contending
they shouldn't be contending	I shouldn't have contended
you shouldn't have contended
he shouldn't have contended
we shouldn't have contended
you shouldn't have contended
they shouldn't have contended	I shouldn't have been contending
you shouldn't have been contending
he shouldn't have been contending
we shouldn't have been contending
you shouldn't have been contending
they shouldn't have been contending	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I contend?
should you contend?
should he contend?
should we contend?
should you contend?
should they contend? 	should I be contending?
should you be contending?
should he be contending?
should we be contending?
should you be contending?
should they be contending? 	should I have contended?
should you have contended?
should he have contended?
should we have contended?
should you have contended?
should they have contended? 	should I have been contending?
should you have been contending?
should he have been contending?
should we have been contending?
should you have been contending?
should they have been contending? 	

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