could backdate
Verbo regular: backdate - backdated- backdated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could backdate
you could backdate
she could backdate
we could backdate
you could backdate
they could backdate 	I could be backdating
you could be backdating
she could be backdating
we could be backdating
you could be backdating
they could be backdating	I could have backdated
you could have backdated
she could have backdated
we could have backdated
you could have backdated
they could have backdated	I could have been backdating
you could have been backdating
she could have been backdating
we could have been backdating
you could have been backdating
they could have been backdating	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't backdate
you couldn't backdate
she couldn't backdate
we couldn't backdate
you couldn't backdate
they couldn't backdate 	I couldn't be backdating
you couldn't be backdating
she couldn't be backdating
we couldn't be backdating
you couldn't be backdating
they couldn't be backdating	I couldn't have backdated
you couldn't have backdated
she couldn't have backdated
we couldn't have backdated
you couldn't have backdated
they couldn't have backdated	I couldn't have been backdating
you couldn't have been backdating
she couldn't have been backdating
we couldn't have been backdating
you couldn't have been backdating
they couldn't have been backdating	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I backdate?
could you backdate?
could she backdate?
could we backdate?
could you backdate?
could they backdate? 	could I be backdating?
could you be backdating?
could she be backdating?
could we be backdating?
could you be backdating?
could they be backdating? 	could I have backdated?
could you have backdated?
could she have backdated?
could we have backdated?
could you have backdated?
could they have backdated? 	could I have been backdating?
could you have been backdating?
could she have been backdating?
could we have been backdating?
could you have been backdating?
could they have been backdating? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I backdate?
couldn't you backdate?
couldn't she backdate?
couldn't we backdate?
couldn't you backdate?
couldn't they backdate? 	couldn't I be backdating?
couldn't you be backdating?
couldn't she be backdating?
couldn't we be backdating?
couldn't you be backdating?
couldn't they be backdating? 	couldn't I have backdated?
couldn't you have backdated?
couldn't she have backdated?
couldn't we have backdated?
couldn't you have backdated?
couldn't they have backdated? 	couldn't I have been backdating?
couldn't you have been backdating?
couldn't she have been backdating?
couldn't we have been backdating?
couldn't you have been backdating?
couldn't they have been backdating?