should singe
Verbo regular: singe - singed- singed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I'd singe
you'd singe
he'd singe
we'd singe
you'd singe
they'd singe 	I'd be singing
you'd be singing
he'd be singing
we'd be singing
you'd be singing
they'd be singing	I should've singed
you should've singed
he should've singed
we should've singed
you should've singed
they should've singed	I should've been singing
you should've been singing
he should've been singing
we should've been singing
you should've been singing
they should've been singing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shouldn't singe
you shouldn't singe
he shouldn't singe
we shouldn't singe
you shouldn't singe
they shouldn't singe 	I shouldn't be singing
you shouldn't be singing
he shouldn't be singing
we shouldn't be singing
you shouldn't be singing
they shouldn't be singing	I shouldn't have singed
you shouldn't have singed
he shouldn't have singed
we shouldn't have singed
you shouldn't have singed
they shouldn't have singed	I shouldn't have been singing
you shouldn't have been singing
he shouldn't have been singing
we shouldn't have been singing
you shouldn't have been singing
they shouldn't have been singing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I singe?
should you singe?
should he singe?
should we singe?
should you singe?
should they singe? 	should I be singing?
should you be singing?
should he be singing?
should we be singing?
should you be singing?
should they be singing? 	should I have singed?
should you have singed?
should he have singed?
should we have singed?
should you have singed?
should they have singed? 	should I have been singing?
should you have been singing?
should he have been singing?
should we have been singing?
should you have been singing?
should they have been singing? 	

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