can combine
Verbo regular: combine - combined- combined

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can combine
you can combine
he can combine
we can combine
you can combine
they can combine 	I can be combining
you can be combining
he can be combining
we can be combining
you can be combining
they can be combining	I can have combined
you can have combined
he can have combined
we can have combined
you can have combined
they can have combined	I can have been combining
you can have been combining
he can have been combining
we can have been combining
you can have been combining
they can have been combining	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can't combine
you can't combine
he can't combine
we can't combine
you can't combine
they can't combine 	I can't be combining
you can't be combining
he can't be combining
we can't be combining
you can't be combining
they can't be combining	I can't have combined
you can't have combined
he can't have combined
we can't have combined
you can't have combined
they can't have combined	I can't have been combining
you can't have been combining
he can't have been combining
we can't have been combining
you can't have been combining
they can't have been combining	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I combine?
can you combine?
can he combine?
can we combine?
can you combine?
can they combine? 	can I be combining?
can you be combining?
can he be combining?
can we be combining?
can you be combining?
can they be combining? 	can I have combined?
can you have combined?
can he have combined?
can we have combined?
can you have combined?
can they have combined? 	can I have been combining?
can you have been combining?
can he have been combining?
can we have been combining?
can you have been combining?
can they have been combining? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can't I combine?
can't you combine?
can't he combine?
can't we combine?
can't you combine?
can't they combine? 	can't I be combining?
can't you be combining?
can't he be combining?
can't we be combining?
can't you be combining?
can't they be combining? 	can't I have combined?
can't you have combined?
can't he have combined?
can't we have combined?
can't you have combined?
can't they have combined? 	can't I have been combining?
can't you have been combining?
can't he have been combining?
can't we have been combining?
can't you have been combining?
can't they have been combining?