can skulk
Verbo regular: skulk - skulked- skulked

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can skulk
you can skulk
he can skulk
we can skulk
you can skulk
they can skulk 	I can be skulking
you can be skulking
he can be skulking
we can be skulking
you can be skulking
they can be skulking	I can have skulked
you can have skulked
he can have skulked
we can have skulked
you can have skulked
they can have skulked	I can have been skulking
you can have been skulking
he can have been skulking
we can have been skulking
you can have been skulking
they can have been skulking	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot skulk
you cannot skulk
he cannot skulk
we cannot skulk
you cannot skulk
they cannot skulk 	I cannot be skulking
you cannot be skulking
he cannot be skulking
we cannot be skulking
you cannot be skulking
they cannot be skulking	I cannot have skulked
you cannot have skulked
he cannot have skulked
we cannot have skulked
you cannot have skulked
they cannot have skulked	I cannot have been skulking
you cannot have been skulking
he cannot have been skulking
we cannot have been skulking
you cannot have been skulking
they cannot have been skulking	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I skulk?
can you skulk?
can he skulk?
can we skulk?
can you skulk?
can they skulk? 	can I be skulking?
can you be skulking?
can he be skulking?
can we be skulking?
can you be skulking?
can they be skulking? 	can I have skulked?
can you have skulked?
can he have skulked?
can we have skulked?
can you have skulked?
can they have skulked? 	can I have been skulking?
can you have been skulking?
can he have been skulking?
can we have been skulking?
can you have been skulking?
can they have been skulking? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not skulk?
can you not skulk?
can he not skulk?
can we not skulk?
can you not skulk?
can they not skulk? 	can I not be skulking?
can you not be skulking?
can he not be skulking?
can we not be skulking?
can you not be skulking?
can they not be skulking? 	can I not have skulked?
can you not have skulked?
can he not have skulked?
can we not have skulked?
can you not have skulked?
can they not have skulked? 	can I not have been skulking?
can you not have been skulking?
can he not have been skulking?
can we not have been skulking?
can you not have been skulking?
can they not have been skulking?