could endeavor
Verbo regular: endeavor - endeavored- endeavored

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could endeavor
you could endeavor
he could endeavor
we could endeavor
you could endeavor
they could endeavor 	I could be endeavoring
you could be endeavoring
he could be endeavoring
we could be endeavoring
you could be endeavoring
they could be endeavoring	I could have endeavored
you could have endeavored
he could have endeavored
we could have endeavored
you could have endeavored
they could have endeavored	I could have been endeavoring
you could have been endeavoring
he could have been endeavoring
we could have been endeavoring
you could have been endeavoring
they could have been endeavoring	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't endeavor
you couldn't endeavor
he couldn't endeavor
we couldn't endeavor
you couldn't endeavor
they couldn't endeavor 	I couldn't be endeavoring
you couldn't be endeavoring
he couldn't be endeavoring
we couldn't be endeavoring
you couldn't be endeavoring
they couldn't be endeavoring	I couldn't have endeavored
you couldn't have endeavored
he couldn't have endeavored
we couldn't have endeavored
you couldn't have endeavored
they couldn't have endeavored	I couldn't have been endeavoring
you couldn't have been endeavoring
he couldn't have been endeavoring
we couldn't have been endeavoring
you couldn't have been endeavoring
they couldn't have been endeavoring	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I endeavor?
could you endeavor?
could he endeavor?
could we endeavor?
could you endeavor?
could they endeavor? 	could I be endeavoring?
could you be endeavoring?
could he be endeavoring?
could we be endeavoring?
could you be endeavoring?
could they be endeavoring? 	could I have endeavored?
could you have endeavored?
could he have endeavored?
could we have endeavored?
could you have endeavored?
could they have endeavored? 	could I have been endeavoring?
could you have been endeavoring?
could he have been endeavoring?
could we have been endeavoring?
could you have been endeavoring?
could they have been endeavoring? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I endeavor?
couldn't you endeavor?
couldn't he endeavor?
couldn't we endeavor?
couldn't you endeavor?
couldn't they endeavor? 	couldn't I be endeavoring?
couldn't you be endeavoring?
couldn't he be endeavoring?
couldn't we be endeavoring?
couldn't you be endeavoring?
couldn't they be endeavoring? 	couldn't I have endeavored?
couldn't you have endeavored?
couldn't he have endeavored?
couldn't we have endeavored?
couldn't you have endeavored?
couldn't they have endeavored? 	couldn't I have been endeavoring?
couldn't you have been endeavoring?
couldn't he have been endeavoring?
couldn't we have been endeavoring?
couldn't you have been endeavoring?
couldn't they have been endeavoring?