can function
Verbo regular: function - functioned- functioned

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can function
you can function
he can function
we can function
you can function
they can function 	I can be functioning
you can be functioning
he can be functioning
we can be functioning
you can be functioning
they can be functioning	I can have functioned
you can have functioned
he can have functioned
we can have functioned
you can have functioned
they can have functioned	I can have been functioning
you can have been functioning
he can have been functioning
we can have been functioning
you can have been functioning
they can have been functioning	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can't function
you can't function
he can't function
we can't function
you can't function
they can't function 	I can't be functioning
you can't be functioning
he can't be functioning
we can't be functioning
you can't be functioning
they can't be functioning	I can't have functioned
you can't have functioned
he can't have functioned
we can't have functioned
you can't have functioned
they can't have functioned	I can't have been functioning
you can't have been functioning
he can't have been functioning
we can't have been functioning
you can't have been functioning
they can't have been functioning	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I function?
can you function?
can he function?
can we function?
can you function?
can they function? 	can I be functioning?
can you be functioning?
can he be functioning?
can we be functioning?
can you be functioning?
can they be functioning? 	can I have functioned?
can you have functioned?
can he have functioned?
can we have functioned?
can you have functioned?
can they have functioned? 	can I have been functioning?
can you have been functioning?
can he have been functioning?
can we have been functioning?
can you have been functioning?
can they have been functioning? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can't I function?
can't you function?
can't he function?
can't we function?
can't you function?
can't they function? 	can't I be functioning?
can't you be functioning?
can't he be functioning?
can't we be functioning?
can't you be functioning?
can't they be functioning? 	can't I have functioned?
can't you have functioned?
can't he have functioned?
can't we have functioned?
can't you have functioned?
can't they have functioned? 	can't I have been functioning?
can't you have been functioning?
can't he have been functioning?
can't we have been functioning?
can't you have been functioning?
can't they have been functioning?