could subirrigate
Verbo regular: subirrigate - subirrigated- subirrigated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could subirrigate
you could subirrigate
he could subirrigate
we could subirrigate
you could subirrigate
they could subirrigate 	I could be subirrigating
you could be subirrigating
he could be subirrigating
we could be subirrigating
you could be subirrigating
they could be subirrigating	I could have subirrigated
you could have subirrigated
he could have subirrigated
we could have subirrigated
you could have subirrigated
they could have subirrigated	I could have been subirrigating
you could have been subirrigating
he could have been subirrigating
we could have been subirrigating
you could have been subirrigating
they could have been subirrigating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't subirrigate
you couldn't subirrigate
he couldn't subirrigate
we couldn't subirrigate
you couldn't subirrigate
they couldn't subirrigate 	I couldn't be subirrigating
you couldn't be subirrigating
he couldn't be subirrigating
we couldn't be subirrigating
you couldn't be subirrigating
they couldn't be subirrigating	I couldn't have subirrigated
you couldn't have subirrigated
he couldn't have subirrigated
we couldn't have subirrigated
you couldn't have subirrigated
they couldn't have subirrigated	I couldn't have been subirrigating
you couldn't have been subirrigating
he couldn't have been subirrigating
we couldn't have been subirrigating
you couldn't have been subirrigating
they couldn't have been subirrigating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I subirrigate?
could you subirrigate?
could he subirrigate?
could we subirrigate?
could you subirrigate?
could they subirrigate? 	could I be subirrigating?
could you be subirrigating?
could he be subirrigating?
could we be subirrigating?
could you be subirrigating?
could they be subirrigating? 	could I have subirrigated?
could you have subirrigated?
could he have subirrigated?
could we have subirrigated?
could you have subirrigated?
could they have subirrigated? 	could I have been subirrigating?
could you have been subirrigating?
could he have been subirrigating?
could we have been subirrigating?
could you have been subirrigating?
could they have been subirrigating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I subirrigate?
couldn't you subirrigate?
couldn't he subirrigate?
couldn't we subirrigate?
couldn't you subirrigate?
couldn't they subirrigate? 	couldn't I be subirrigating?
couldn't you be subirrigating?
couldn't he be subirrigating?
couldn't we be subirrigating?
couldn't you be subirrigating?
couldn't they be subirrigating? 	couldn't I have subirrigated?
couldn't you have subirrigated?
couldn't he have subirrigated?
couldn't we have subirrigated?
couldn't you have subirrigated?
couldn't they have subirrigated? 	couldn't I have been subirrigating?
couldn't you have been subirrigating?
couldn't he have been subirrigating?
couldn't we have been subirrigating?
couldn't you have been subirrigating?
couldn't they have been subirrigating?