could analyse
Verbo regular: analyse - analysed- analysed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could analyse
you could analyse
she could analyse
we could analyse
you could analyse
they could analyse 	I could be analysing
you could be analysing
she could be analysing
we could be analysing
you could be analysing
they could be analysing	I could have analysed
you could have analysed
she could have analysed
we could have analysed
you could have analysed
they could have analysed	I could have been analysing
you could have been analysing
she could have been analysing
we could have been analysing
you could have been analysing
they could have been analysing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't analyse
you couldn't analyse
she couldn't analyse
we couldn't analyse
you couldn't analyse
they couldn't analyse 	I couldn't be analysing
you couldn't be analysing
she couldn't be analysing
we couldn't be analysing
you couldn't be analysing
they couldn't be analysing	I couldn't have analysed
you couldn't have analysed
she couldn't have analysed
we couldn't have analysed
you couldn't have analysed
they couldn't have analysed	I couldn't have been analysing
you couldn't have been analysing
she couldn't have been analysing
we couldn't have been analysing
you couldn't have been analysing
they couldn't have been analysing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I analyse?
could you analyse?
could she analyse?
could we analyse?
could you analyse?
could they analyse? 	could I be analysing?
could you be analysing?
could she be analysing?
could we be analysing?
could you be analysing?
could they be analysing? 	could I have analysed?
could you have analysed?
could she have analysed?
could we have analysed?
could you have analysed?
could they have analysed? 	could I have been analysing?
could you have been analysing?
could she have been analysing?
could we have been analysing?
could you have been analysing?
could they have been analysing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I analyse?
couldn't you analyse?
couldn't she analyse?
couldn't we analyse?
couldn't you analyse?
couldn't they analyse? 	couldn't I be analysing?
couldn't you be analysing?
couldn't she be analysing?
couldn't we be analysing?
couldn't you be analysing?
couldn't they be analysing? 	couldn't I have analysed?
couldn't you have analysed?
couldn't she have analysed?
couldn't we have analysed?
couldn't you have analysed?
couldn't they have analysed? 	couldn't I have been analysing?
couldn't you have been analysing?
couldn't she have been analysing?
couldn't we have been analysing?
couldn't you have been analysing?
couldn't they have been analysing?