can backdate
Verbo regular: backdate - backdated- backdated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can backdate
you can backdate
he can backdate
we can backdate
you can backdate
they can backdate 	I can be backdating
you can be backdating
he can be backdating
we can be backdating
you can be backdating
they can be backdating	I can have backdated
you can have backdated
he can have backdated
we can have backdated
you can have backdated
they can have backdated	I can have been backdating
you can have been backdating
he can have been backdating
we can have been backdating
you can have been backdating
they can have been backdating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can't backdate
you can't backdate
he can't backdate
we can't backdate
you can't backdate
they can't backdate 	I can't be backdating
you can't be backdating
he can't be backdating
we can't be backdating
you can't be backdating
they can't be backdating	I can't have backdated
you can't have backdated
he can't have backdated
we can't have backdated
you can't have backdated
they can't have backdated	I can't have been backdating
you can't have been backdating
he can't have been backdating
we can't have been backdating
you can't have been backdating
they can't have been backdating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I backdate?
can you backdate?
can he backdate?
can we backdate?
can you backdate?
can they backdate? 	can I be backdating?
can you be backdating?
can he be backdating?
can we be backdating?
can you be backdating?
can they be backdating? 	can I have backdated?
can you have backdated?
can he have backdated?
can we have backdated?
can you have backdated?
can they have backdated? 	can I have been backdating?
can you have been backdating?
can he have been backdating?
can we have been backdating?
can you have been backdating?
can they have been backdating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can't I backdate?
can't you backdate?
can't he backdate?
can't we backdate?
can't you backdate?
can't they backdate? 	can't I be backdating?
can't you be backdating?
can't he be backdating?
can't we be backdating?
can't you be backdating?
can't they be backdating? 	can't I have backdated?
can't you have backdated?
can't he have backdated?
can't we have backdated?
can't you have backdated?
can't they have backdated? 	can't I have been backdating?
can't you have been backdating?
can't he have been backdating?
can't we have been backdating?
can't you have been backdating?
can't they have been backdating?