can sulk
Regular verb: sulk - sulked- sulked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can sulk
you can sulk
he can sulk
we can sulk
you can sulk
they can sulk 	I can be sulking
you can be sulking
he can be sulking
we can be sulking
you can be sulking
they can be sulking	I can have sulked
you can have sulked
he can have sulked
we can have sulked
you can have sulked
they can have sulked	I can have been sulking
you can have been sulking
he can have been sulking
we can have been sulking
you can have been sulking
they can have been sulking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't sulk
you can't sulk
he can't sulk
we can't sulk
you can't sulk
they can't sulk 	I can't be sulking
you can't be sulking
he can't be sulking
we can't be sulking
you can't be sulking
they can't be sulking	I can't have sulked
you can't have sulked
he can't have sulked
we can't have sulked
you can't have sulked
they can't have sulked	I can't have been sulking
you can't have been sulking
he can't have been sulking
we can't have been sulking
you can't have been sulking
they can't have been sulking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I sulk?
can you sulk?
can he sulk?
can we sulk?
can you sulk?
can they sulk? 	can I be sulking?
can you be sulking?
can he be sulking?
can we be sulking?
can you be sulking?
can they be sulking? 	can I have sulked?
can you have sulked?
can he have sulked?
can we have sulked?
can you have sulked?
can they have sulked? 	can I have been sulking?
can you have been sulking?
can he have been sulking?
can we have been sulking?
can you have been sulking?
can they have been sulking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I sulk?
can't you sulk?
can't he sulk?
can't we sulk?
can't you sulk?
can't they sulk? 	can't I be sulking?
can't you be sulking?
can't he be sulking?
can't we be sulking?
can't you be sulking?
can't they be sulking? 	can't I have sulked?
can't you have sulked?
can't he have sulked?
can't we have sulked?
can't you have sulked?
can't they have sulked? 	can't I have been sulking?
can't you have been sulking?
can't he have been sulking?
can't we have been sulking?
can't you have been sulking?
can't they have been sulking?