can ulcerate
Verbo regular: ulcerate - ulcerated- ulcerated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can ulcerate
you can ulcerate
he can ulcerate
we can ulcerate
you can ulcerate
they can ulcerate 	I can be ulcerating
you can be ulcerating
he can be ulcerating
we can be ulcerating
you can be ulcerating
they can be ulcerating	I can have ulcerated
you can have ulcerated
he can have ulcerated
we can have ulcerated
you can have ulcerated
they can have ulcerated	I can have been ulcerating
you can have been ulcerating
he can have been ulcerating
we can have been ulcerating
you can have been ulcerating
they can have been ulcerating	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot ulcerate
you cannot ulcerate
he cannot ulcerate
we cannot ulcerate
you cannot ulcerate
they cannot ulcerate 	I cannot be ulcerating
you cannot be ulcerating
he cannot be ulcerating
we cannot be ulcerating
you cannot be ulcerating
they cannot be ulcerating	I cannot have ulcerated
you cannot have ulcerated
he cannot have ulcerated
we cannot have ulcerated
you cannot have ulcerated
they cannot have ulcerated	I cannot have been ulcerating
you cannot have been ulcerating
he cannot have been ulcerating
we cannot have been ulcerating
you cannot have been ulcerating
they cannot have been ulcerating	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I ulcerate?
can you ulcerate?
can he ulcerate?
can we ulcerate?
can you ulcerate?
can they ulcerate? 	can I be ulcerating?
can you be ulcerating?
can he be ulcerating?
can we be ulcerating?
can you be ulcerating?
can they be ulcerating? 	can I have ulcerated?
can you have ulcerated?
can he have ulcerated?
can we have ulcerated?
can you have ulcerated?
can they have ulcerated? 	can I have been ulcerating?
can you have been ulcerating?
can he have been ulcerating?
can we have been ulcerating?
can you have been ulcerating?
can they have been ulcerating? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not ulcerate?
can you not ulcerate?
can he not ulcerate?
can we not ulcerate?
can you not ulcerate?
can they not ulcerate? 	can I not be ulcerating?
can you not be ulcerating?
can he not be ulcerating?
can we not be ulcerating?
can you not be ulcerating?
can they not be ulcerating? 	can I not have ulcerated?
can you not have ulcerated?
can he not have ulcerated?
can we not have ulcerated?
can you not have ulcerated?
can they not have ulcerated? 	can I not have been ulcerating?
can you not have been ulcerating?
can he not have been ulcerating?
can we not have been ulcerating?
can you not have been ulcerating?
can they not have been ulcerating?