could characterise
Verbo regular: characterise - characterised- characterised

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could characterise
you could characterise
he could characterise
we could characterise
you could characterise
they could characterise 	I could be characterising
you could be characterising
he could be characterising
we could be characterising
you could be characterising
they could be characterising	I could have characterised
you could have characterised
he could have characterised
we could have characterised
you could have characterised
they could have characterised	I could have been characterising
you could have been characterising
he could have been characterising
we could have been characterising
you could have been characterising
they could have been characterising	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't characterise
you couldn't characterise
he couldn't characterise
we couldn't characterise
you couldn't characterise
they couldn't characterise 	I couldn't be characterising
you couldn't be characterising
he couldn't be characterising
we couldn't be characterising
you couldn't be characterising
they couldn't be characterising	I couldn't have characterised
you couldn't have characterised
he couldn't have characterised
we couldn't have characterised
you couldn't have characterised
they couldn't have characterised	I couldn't have been characterising
you couldn't have been characterising
he couldn't have been characterising
we couldn't have been characterising
you couldn't have been characterising
they couldn't have been characterising	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I characterise?
could you characterise?
could he characterise?
could we characterise?
could you characterise?
could they characterise? 	could I be characterising?
could you be characterising?
could he be characterising?
could we be characterising?
could you be characterising?
could they be characterising? 	could I have characterised?
could you have characterised?
could he have characterised?
could we have characterised?
could you have characterised?
could they have characterised? 	could I have been characterising?
could you have been characterising?
could he have been characterising?
could we have been characterising?
could you have been characterising?
could they have been characterising? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I characterise?
couldn't you characterise?
couldn't he characterise?
couldn't we characterise?
couldn't you characterise?
couldn't they characterise? 	couldn't I be characterising?
couldn't you be characterising?
couldn't he be characterising?
couldn't we be characterising?
couldn't you be characterising?
couldn't they be characterising? 	couldn't I have characterised?
couldn't you have characterised?
couldn't he have characterised?
couldn't we have characterised?
couldn't you have characterised?
couldn't they have characterised? 	couldn't I have been characterising?
couldn't you have been characterising?
couldn't he have been characterising?
couldn't we have been characterising?
couldn't you have been characterising?
couldn't they have been characterising?