could photosynthesize
Verbo regular: photosynthesize - photosynthesized- photosynthesized

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could photosynthesize
you could photosynthesize
he could photosynthesize
we could photosynthesize
you could photosynthesize
they could photosynthesize 	I could be photosynthesizing
you could be photosynthesizing
he could be photosynthesizing
we could be photosynthesizing
you could be photosynthesizing
they could be photosynthesizing	I could have photosynthesized
you could have photosynthesized
he could have photosynthesized
we could have photosynthesized
you could have photosynthesized
they could have photosynthesized	I could have been photosynthesizing
you could have been photosynthesizing
he could have been photosynthesizing
we could have been photosynthesizing
you could have been photosynthesizing
they could have been photosynthesizing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not photosynthesize
you could not photosynthesize
he could not photosynthesize
we could not photosynthesize
you could not photosynthesize
they could not photosynthesize 	I could not be photosynthesizing
you could not be photosynthesizing
he could not be photosynthesizing
we could not be photosynthesizing
you could not be photosynthesizing
they could not be photosynthesizing	I could not have photosynthesized
you could not have photosynthesized
he could not have photosynthesized
we could not have photosynthesized
you could not have photosynthesized
they could not have photosynthesized	I could not have been photosynthesizing
you could not have been photosynthesizing
he could not have been photosynthesizing
we could not have been photosynthesizing
you could not have been photosynthesizing
they could not have been photosynthesizing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I photosynthesize?
could you photosynthesize?
could he photosynthesize?
could we photosynthesize?
could you photosynthesize?
could they photosynthesize? 	could I be photosynthesizing?
could you be photosynthesizing?
could he be photosynthesizing?
could we be photosynthesizing?
could you be photosynthesizing?
could they be photosynthesizing? 	could I have photosynthesized?
could you have photosynthesized?
could he have photosynthesized?
could we have photosynthesized?
could you have photosynthesized?
could they have photosynthesized? 	could I have been photosynthesizing?
could you have been photosynthesizing?
could he have been photosynthesizing?
could we have been photosynthesizing?
could you have been photosynthesizing?
could they have been photosynthesizing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not photosynthesize?
could you not photosynthesize?
could he not photosynthesize?
could we not photosynthesize?
could you not photosynthesize?
could they not photosynthesize? 	could I not be photosynthesizing?
could you not be photosynthesizing?
could he not be photosynthesizing?
could we not be photosynthesizing?
could you not be photosynthesizing?
could they not be photosynthesizing? 	could I not have photosynthesized?
could you not have photosynthesized?
could he not have photosynthesized?
could we not have photosynthesized?
could you not have photosynthesized?
could they not have photosynthesized? 	could I not have been photosynthesizing?
could you not have been photosynthesizing?
could he not have been photosynthesizing?
could we not have been photosynthesizing?
could you not have been photosynthesizing?
could they not have been photosynthesizing?