could ululate
Verbo regular: ululate - ululated- ululated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could ululate
you could ululate
she could ululate
we could ululate
you could ululate
they could ululate 	I could be ululating
you could be ululating
she could be ululating
we could be ululating
you could be ululating
they could be ululating	I could have ululated
you could have ululated
she could have ululated
we could have ululated
you could have ululated
they could have ululated	I could have been ululating
you could have been ululating
she could have been ululating
we could have been ululating
you could have been ululating
they could have been ululating	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not ululate
you could not ululate
she could not ululate
we could not ululate
you could not ululate
they could not ululate 	I could not be ululating
you could not be ululating
she could not be ululating
we could not be ululating
you could not be ululating
they could not be ululating	I could not have ululated
you could not have ululated
she could not have ululated
we could not have ululated
you could not have ululated
they could not have ululated	I could not have been ululating
you could not have been ululating
she could not have been ululating
we could not have been ululating
you could not have been ululating
they could not have been ululating	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I ululate?
could you ululate?
could she ululate?
could we ululate?
could you ululate?
could they ululate? 	could I be ululating?
could you be ululating?
could she be ululating?
could we be ululating?
could you be ululating?
could they be ululating? 	could I have ululated?
could you have ululated?
could she have ululated?
could we have ululated?
could you have ululated?
could they have ululated? 	could I have been ululating?
could you have been ululating?
could she have been ululating?
could we have been ululating?
could you have been ululating?
could they have been ululating? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not ululate?
could you not ululate?
could she not ululate?
could we not ululate?
could you not ululate?
could they not ululate? 	could I not be ululating?
could you not be ululating?
could she not be ululating?
could we not be ululating?
could you not be ululating?
could they not be ululating? 	could I not have ululated?
could you not have ululated?
could she not have ululated?
could we not have ululated?
could you not have ululated?
could they not have ululated? 	could I not have been ululating?
could you not have been ululating?
could she not have been ululating?
could we not have been ululating?
could you not have been ululating?
could they not have been ululating?