can joke
Verbo regular: joke - joked- joked

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can joke
you can joke
he can joke
we can joke
you can joke
they can joke 	I can be joking
you can be joking
he can be joking
we can be joking
you can be joking
they can be joking	I can have joked
you can have joked
he can have joked
we can have joked
you can have joked
they can have joked	I can have been joking
you can have been joking
he can have been joking
we can have been joking
you can have been joking
they can have been joking	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can't joke
you can't joke
he can't joke
we can't joke
you can't joke
they can't joke 	I can't be joking
you can't be joking
he can't be joking
we can't be joking
you can't be joking
they can't be joking	I can't have joked
you can't have joked
he can't have joked
we can't have joked
you can't have joked
they can't have joked	I can't have been joking
you can't have been joking
he can't have been joking
we can't have been joking
you can't have been joking
they can't have been joking	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I joke?
can you joke?
can he joke?
can we joke?
can you joke?
can they joke? 	can I be joking?
can you be joking?
can he be joking?
can we be joking?
can you be joking?
can they be joking? 	can I have joked?
can you have joked?
can he have joked?
can we have joked?
can you have joked?
can they have joked? 	can I have been joking?
can you have been joking?
can he have been joking?
can we have been joking?
can you have been joking?
can they have been joking? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can't I joke?
can't you joke?
can't he joke?
can't we joke?
can't you joke?
can't they joke? 	can't I be joking?
can't you be joking?
can't he be joking?
can't we be joking?
can't you be joking?
can't they be joking? 	can't I have joked?
can't you have joked?
can't he have joked?
can't we have joked?
can't you have joked?
can't they have joked? 	can't I have been joking?
can't you have been joking?
can't he have been joking?
can't we have been joking?
can't you have been joking?
can't they have been joking?