could try
Verbo regular: try - tried- tried

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could try
you could try
she could try
we could try
you could try
they could try 	I could be trying
you could be trying
she could be trying
we could be trying
you could be trying
they could be trying	I could have tried
you could have tried
she could have tried
we could have tried
you could have tried
they could have tried	I could have been trying
you could have been trying
she could have been trying
we could have been trying
you could have been trying
they could have been trying	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't try
you couldn't try
she couldn't try
we couldn't try
you couldn't try
they couldn't try 	I couldn't be trying
you couldn't be trying
she couldn't be trying
we couldn't be trying
you couldn't be trying
they couldn't be trying	I couldn't have tried
you couldn't have tried
she couldn't have tried
we couldn't have tried
you couldn't have tried
they couldn't have tried	I couldn't have been trying
you couldn't have been trying
she couldn't have been trying
we couldn't have been trying
you couldn't have been trying
they couldn't have been trying	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I try?
could you try?
could she try?
could we try?
could you try?
could they try? 	could I be trying?
could you be trying?
could she be trying?
could we be trying?
could you be trying?
could they be trying? 	could I have tried?
could you have tried?
could she have tried?
could we have tried?
could you have tried?
could they have tried? 	could I have been trying?
could you have been trying?
could she have been trying?
could we have been trying?
could you have been trying?
could they have been trying? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I try?
couldn't you try?
couldn't she try?
couldn't we try?
couldn't you try?
couldn't they try? 	couldn't I be trying?
couldn't you be trying?
couldn't she be trying?
couldn't we be trying?
couldn't you be trying?
couldn't they be trying? 	couldn't I have tried?
couldn't you have tried?
couldn't she have tried?
couldn't we have tried?
couldn't you have tried?
couldn't they have tried? 	couldn't I have been trying?
couldn't you have been trying?
couldn't she have been trying?
couldn't we have been trying?
couldn't you have been trying?
couldn't they have been trying?