can abstract
Verbo regular: abstract - abstracted- abstracted

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can abstract
you can abstract
he can abstract
we can abstract
you can abstract
they can abstract 	I can be abstracting
you can be abstracting
he can be abstracting
we can be abstracting
you can be abstracting
they can be abstracting	I can have abstracted
you can have abstracted
he can have abstracted
we can have abstracted
you can have abstracted
they can have abstracted	I can have been abstracting
you can have been abstracting
he can have been abstracting
we can have been abstracting
you can have been abstracting
they can have been abstracting	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can't abstract
you can't abstract
he can't abstract
we can't abstract
you can't abstract
they can't abstract 	I can't be abstracting
you can't be abstracting
he can't be abstracting
we can't be abstracting
you can't be abstracting
they can't be abstracting	I can't have abstracted
you can't have abstracted
he can't have abstracted
we can't have abstracted
you can't have abstracted
they can't have abstracted	I can't have been abstracting
you can't have been abstracting
he can't have been abstracting
we can't have been abstracting
you can't have been abstracting
they can't have been abstracting	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I abstract?
can you abstract?
can he abstract?
can we abstract?
can you abstract?
can they abstract? 	can I be abstracting?
can you be abstracting?
can he be abstracting?
can we be abstracting?
can you be abstracting?
can they be abstracting? 	can I have abstracted?
can you have abstracted?
can he have abstracted?
can we have abstracted?
can you have abstracted?
can they have abstracted? 	can I have been abstracting?
can you have been abstracting?
can he have been abstracting?
can we have been abstracting?
can you have been abstracting?
can they have been abstracting? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can't I abstract?
can't you abstract?
can't he abstract?
can't we abstract?
can't you abstract?
can't they abstract? 	can't I be abstracting?
can't you be abstracting?
can't he be abstracting?
can't we be abstracting?
can't you be abstracting?
can't they be abstracting? 	can't I have abstracted?
can't you have abstracted?
can't he have abstracted?
can't we have abstracted?
can't you have abstracted?
can't they have abstracted? 	can't I have been abstracting?
can't you have been abstracting?
can't he have been abstracting?
can't we have been abstracting?
can't you have been abstracting?
can't they have been abstracting?