could preregulate
Verbo regular: preregulate - preregulated- preregulated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could preregulate
you could preregulate
he could preregulate
we could preregulate
you could preregulate
they could preregulate 	I could be preregulating
you could be preregulating
he could be preregulating
we could be preregulating
you could be preregulating
they could be preregulating	I could have preregulated
you could have preregulated
he could have preregulated
we could have preregulated
you could have preregulated
they could have preregulated	I could have been preregulating
you could have been preregulating
he could have been preregulating
we could have been preregulating
you could have been preregulating
they could have been preregulating	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't preregulate
you couldn't preregulate
he couldn't preregulate
we couldn't preregulate
you couldn't preregulate
they couldn't preregulate 	I couldn't be preregulating
you couldn't be preregulating
he couldn't be preregulating
we couldn't be preregulating
you couldn't be preregulating
they couldn't be preregulating	I couldn't have preregulated
you couldn't have preregulated
he couldn't have preregulated
we couldn't have preregulated
you couldn't have preregulated
they couldn't have preregulated	I couldn't have been preregulating
you couldn't have been preregulating
he couldn't have been preregulating
we couldn't have been preregulating
you couldn't have been preregulating
they couldn't have been preregulating	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I preregulate?
could you preregulate?
could he preregulate?
could we preregulate?
could you preregulate?
could they preregulate? 	could I be preregulating?
could you be preregulating?
could he be preregulating?
could we be preregulating?
could you be preregulating?
could they be preregulating? 	could I have preregulated?
could you have preregulated?
could he have preregulated?
could we have preregulated?
could you have preregulated?
could they have preregulated? 	could I have been preregulating?
could you have been preregulating?
could he have been preregulating?
could we have been preregulating?
could you have been preregulating?
could they have been preregulating? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I preregulate?
couldn't you preregulate?
couldn't he preregulate?
couldn't we preregulate?
couldn't you preregulate?
couldn't they preregulate? 	couldn't I be preregulating?
couldn't you be preregulating?
couldn't he be preregulating?
couldn't we be preregulating?
couldn't you be preregulating?
couldn't they be preregulating? 	couldn't I have preregulated?
couldn't you have preregulated?
couldn't he have preregulated?
couldn't we have preregulated?
couldn't you have preregulated?
couldn't they have preregulated? 	couldn't I have been preregulating?
couldn't you have been preregulating?
couldn't he have been preregulating?
couldn't we have been preregulating?
couldn't you have been preregulating?
couldn't they have been preregulating?