could singularise
Verbo regular: singularise - singularised- singularised

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could singularise
you could singularise
he could singularise
we could singularise
you could singularise
they could singularise 	I could be singularising
you could be singularising
he could be singularising
we could be singularising
you could be singularising
they could be singularising	I could have singularised
you could have singularised
he could have singularised
we could have singularised
you could have singularised
they could have singularised	I could have been singularising
you could have been singularising
he could have been singularising
we could have been singularising
you could have been singularising
they could have been singularising	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not singularise
you could not singularise
he could not singularise
we could not singularise
you could not singularise
they could not singularise 	I could not be singularising
you could not be singularising
he could not be singularising
we could not be singularising
you could not be singularising
they could not be singularising	I could not have singularised
you could not have singularised
he could not have singularised
we could not have singularised
you could not have singularised
they could not have singularised	I could not have been singularising
you could not have been singularising
he could not have been singularising
we could not have been singularising
you could not have been singularising
they could not have been singularising	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I singularise?
could you singularise?
could he singularise?
could we singularise?
could you singularise?
could they singularise? 	could I be singularising?
could you be singularising?
could he be singularising?
could we be singularising?
could you be singularising?
could they be singularising? 	could I have singularised?
could you have singularised?
could he have singularised?
could we have singularised?
could you have singularised?
could they have singularised? 	could I have been singularising?
could you have been singularising?
could he have been singularising?
could we have been singularising?
could you have been singularising?
could they have been singularising? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not singularise?
could you not singularise?
could he not singularise?
could we not singularise?
could you not singularise?
could they not singularise? 	could I not be singularising?
could you not be singularising?
could he not be singularising?
could we not be singularising?
could you not be singularising?
could they not be singularising? 	could I not have singularised?
could you not have singularised?
could he not have singularised?
could we not have singularised?
could you not have singularised?
could they not have singularised? 	could I not have been singularising?
could you not have been singularising?
could he not have been singularising?
could we not have been singularising?
could you not have been singularising?
could they not have been singularising?