should skulk
Verbo regular: skulk - skulked- skulked

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should skulk
you should skulk
he should skulk
we should skulk
you should skulk
they should skulk 	I should be skulking
you should be skulking
he should be skulking
we should be skulking
you should be skulking
they should be skulking	I should have skulked
you should have skulked
he should have skulked
we should have skulked
you should have skulked
they should have skulked	I should have been skulking
you should have been skulking
he should have been skulking
we should have been skulking
you should have been skulking
they should have been skulking	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should not skulk
you should not skulk
he should not skulk
we should not skulk
you should not skulk
they should not skulk 	I should not be skulking
you should not be skulking
he should not be skulking
we should not be skulking
you should not be skulking
they should not be skulking	I should not have skulked
you should not have skulked
he should not have skulked
we should not have skulked
you should not have skulked
they should not have skulked	I should not have been skulking
you should not have been skulking
he should not have been skulking
we should not have been skulking
you should not have been skulking
they should not have been skulking	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I skulk?
should you skulk?
should he skulk?
should we skulk?
should you skulk?
should they skulk? 	should I be skulking?
should you be skulking?
should he be skulking?
should we be skulking?
should you be skulking?
should they be skulking? 	should I have skulked?
should you have skulked?
should he have skulked?
should we have skulked?
should you have skulked?
should they have skulked? 	should I have been skulking?
should you have been skulking?
should he have been skulking?
should we have been skulking?
should you have been skulking?
should they have been skulking? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I not skulk?
should you not skulk?
should he not skulk?
should we not skulk?
should you not skulk?
should they not skulk? 	should I not be skulking?
should you not be skulking?
should he not be skulking?
should we not be skulking?
should you not be skulking?
should they not be skulking? 	should I not have skulked?
should you not have skulked?
should he not have skulked?
should we not have skulked?
should you not have skulked?
should they not have skulked? 	should I not have been skulking?
should you not have been skulking?
should he not have been skulking?
should we not have been skulking?
should you not have been skulking?
should they not have been skulking?