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
she can joke
we can joke
you can joke
they can joke 	I can be joking
you can be joking
she can be joking
we can be joking
you can be joking
they can be joking	I can have joked
you can have joked
she 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
she 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 cannot joke
you cannot joke
she cannot joke
we cannot joke
you cannot joke
they cannot joke 	I cannot be joking
you cannot be joking
she cannot be joking
we cannot be joking
you cannot be joking
they cannot be joking	I cannot have joked
you cannot have joked
she cannot have joked
we cannot have joked
you cannot have joked
they cannot have joked	I cannot have been joking
you cannot have been joking
she cannot have been joking
we cannot have been joking
you cannot have been joking
they cannot have been joking	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I joke?
can you joke?
can she joke?
can we joke?
can you joke?
can they joke? 	can I be joking?
can you be joking?
can she be joking?
can we be joking?
can you be joking?
can they be joking? 	can I have joked?
can you have joked?
can she 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 she 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 I not joke?
can you not joke?
can she not joke?
can we not joke?
can you not joke?
can they not joke? 	can I not be joking?
can you not be joking?
can she not be joking?
can we not be joking?
can you not be joking?
can they not be joking? 	can I not have joked?
can you not have joked?
can she not have joked?
can we not have joked?
can you not have joked?
can they not have joked? 	can I not have been joking?
can you not have been joking?
can she not have been joking?
can we not have been joking?
can you not have been joking?
can they not have been joking?