could preformulate
Verbo regular: preformulate - preformulated- preformulated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could preformulate
you could preformulate
she could preformulate
we could preformulate
you could preformulate
they could preformulate 	I could be preformulating
you could be preformulating
she could be preformulating
we could be preformulating
you could be preformulating
they could be preformulating	I could have preformulated
you could have preformulated
she could have preformulated
we could have preformulated
you could have preformulated
they could have preformulated	I could have been preformulating
you could have been preformulating
she could have been preformulating
we could have been preformulating
you could have been preformulating
they could have been preformulating	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not preformulate
you could not preformulate
she could not preformulate
we could not preformulate
you could not preformulate
they could not preformulate 	I could not be preformulating
you could not be preformulating
she could not be preformulating
we could not be preformulating
you could not be preformulating
they could not be preformulating	I could not have preformulated
you could not have preformulated
she could not have preformulated
we could not have preformulated
you could not have preformulated
they could not have preformulated	I could not have been preformulating
you could not have been preformulating
she could not have been preformulating
we could not have been preformulating
you could not have been preformulating
they could not have been preformulating	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I preformulate?
could you preformulate?
could she preformulate?
could we preformulate?
could you preformulate?
could they preformulate? 	could I be preformulating?
could you be preformulating?
could she be preformulating?
could we be preformulating?
could you be preformulating?
could they be preformulating? 	could I have preformulated?
could you have preformulated?
could she have preformulated?
could we have preformulated?
could you have preformulated?
could they have preformulated? 	could I have been preformulating?
could you have been preformulating?
could she have been preformulating?
could we have been preformulating?
could you have been preformulating?
could they have been preformulating? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not preformulate?
could you not preformulate?
could she not preformulate?
could we not preformulate?
could you not preformulate?
could they not preformulate? 	could I not be preformulating?
could you not be preformulating?
could she not be preformulating?
could we not be preformulating?
could you not be preformulating?
could they not be preformulating? 	could I not have preformulated?
could you not have preformulated?
could she not have preformulated?
could we not have preformulated?
could you not have preformulated?
could they not have preformulated? 	could I not have been preformulating?
could you not have been preformulating?
could she not have been preformulating?
could we not have been preformulating?
could you not have been preformulating?
could they not have been preformulating?