could precertify
Verbo regular: precertify - precertified- precertified

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could precertify
you could precertify
he could precertify
we could precertify
you could precertify
they could precertify 	I could be precertifying
you could be precertifying
he could be precertifying
we could be precertifying
you could be precertifying
they could be precertifying	I could have precertified
you could have precertified
he could have precertified
we could have precertified
you could have precertified
they could have precertified	I could have been precertifying
you could have been precertifying
he could have been precertifying
we could have been precertifying
you could have been precertifying
they could have been precertifying	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not precertify
you could not precertify
he could not precertify
we could not precertify
you could not precertify
they could not precertify 	I could not be precertifying
you could not be precertifying
he could not be precertifying
we could not be precertifying
you could not be precertifying
they could not be precertifying	I could not have precertified
you could not have precertified
he could not have precertified
we could not have precertified
you could not have precertified
they could not have precertified	I could not have been precertifying
you could not have been precertifying
he could not have been precertifying
we could not have been precertifying
you could not have been precertifying
they could not have been precertifying	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I precertify?
could you precertify?
could he precertify?
could we precertify?
could you precertify?
could they precertify? 	could I be precertifying?
could you be precertifying?
could he be precertifying?
could we be precertifying?
could you be precertifying?
could they be precertifying? 	could I have precertified?
could you have precertified?
could he have precertified?
could we have precertified?
could you have precertified?
could they have precertified? 	could I have been precertifying?
could you have been precertifying?
could he have been precertifying?
could we have been precertifying?
could you have been precertifying?
could they have been precertifying? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not precertify?
could you not precertify?
could he not precertify?
could we not precertify?
could you not precertify?
could they not precertify? 	could I not be precertifying?
could you not be precertifying?
could he not be precertifying?
could we not be precertifying?
could you not be precertifying?
could they not be precertifying? 	could I not have precertified?
could you not have precertified?
could he not have precertified?
could we not have precertified?
could you not have precertified?
could they not have precertified? 	could I not have been precertifying?
could you not have been precertifying?
could he not have been precertifying?
could we not have been precertifying?
could you not have been precertifying?
could they not have been precertifying?