could tranquillise
Verbo regular: tranquillise - tranquillised- tranquillised

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could tranquillise
you could tranquillise
she could tranquillise
we could tranquillise
you could tranquillise
they could tranquillise 	I could be tranquillising
you could be tranquillising
she could be tranquillising
we could be tranquillising
you could be tranquillising
they could be tranquillising	I could have tranquillised
you could have tranquillised
she could have tranquillised
we could have tranquillised
you could have tranquillised
they could have tranquillised	I could have been tranquillising
you could have been tranquillising
she could have been tranquillising
we could have been tranquillising
you could have been tranquillising
they could have been tranquillising	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not tranquillise
you could not tranquillise
she could not tranquillise
we could not tranquillise
you could not tranquillise
they could not tranquillise 	I could not be tranquillising
you could not be tranquillising
she could not be tranquillising
we could not be tranquillising
you could not be tranquillising
they could not be tranquillising	I could not have tranquillised
you could not have tranquillised
she could not have tranquillised
we could not have tranquillised
you could not have tranquillised
they could not have tranquillised	I could not have been tranquillising
you could not have been tranquillising
she could not have been tranquillising
we could not have been tranquillising
you could not have been tranquillising
they could not have been tranquillising	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I tranquillise?
could you tranquillise?
could she tranquillise?
could we tranquillise?
could you tranquillise?
could they tranquillise? 	could I be tranquillising?
could you be tranquillising?
could she be tranquillising?
could we be tranquillising?
could you be tranquillising?
could they be tranquillising? 	could I have tranquillised?
could you have tranquillised?
could she have tranquillised?
could we have tranquillised?
could you have tranquillised?
could they have tranquillised? 	could I have been tranquillising?
could you have been tranquillising?
could she have been tranquillising?
could we have been tranquillising?
could you have been tranquillising?
could they have been tranquillising? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not tranquillise?
could you not tranquillise?
could she not tranquillise?
could we not tranquillise?
could you not tranquillise?
could they not tranquillise? 	could I not be tranquillising?
could you not be tranquillising?
could she not be tranquillising?
could we not be tranquillising?
could you not be tranquillising?
could they not be tranquillising? 	could I not have tranquillised?
could you not have tranquillised?
could she not have tranquillised?
could we not have tranquillised?
could you not have tranquillised?
could they not have tranquillised? 	could I not have been tranquillising?
could you not have been tranquillising?
could she not have been tranquillising?
could we not have been tranquillising?
could you not have been tranquillising?
could they not have been tranquillising?