could endeavour
Verbo regular: endeavour - endeavoured- endeavoured

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could endeavour
you could endeavour
he could endeavour
we could endeavour
you could endeavour
they could endeavour 	I could be endeavouring
you could be endeavouring
he could be endeavouring
we could be endeavouring
you could be endeavouring
they could be endeavouring	I could have endeavoured
you could have endeavoured
he could have endeavoured
we could have endeavoured
you could have endeavoured
they could have endeavoured	I could have been endeavouring
you could have been endeavouring
he could have been endeavouring
we could have been endeavouring
you could have been endeavouring
they could have been endeavouring	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't endeavour
you couldn't endeavour
he couldn't endeavour
we couldn't endeavour
you couldn't endeavour
they couldn't endeavour 	I couldn't be endeavouring
you couldn't be endeavouring
he couldn't be endeavouring
we couldn't be endeavouring
you couldn't be endeavouring
they couldn't be endeavouring	I couldn't have endeavoured
you couldn't have endeavoured
he couldn't have endeavoured
we couldn't have endeavoured
you couldn't have endeavoured
they couldn't have endeavoured	I couldn't have been endeavouring
you couldn't have been endeavouring
he couldn't have been endeavouring
we couldn't have been endeavouring
you couldn't have been endeavouring
they couldn't have been endeavouring	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I endeavour?
could you endeavour?
could he endeavour?
could we endeavour?
could you endeavour?
could they endeavour? 	could I be endeavouring?
could you be endeavouring?
could he be endeavouring?
could we be endeavouring?
could you be endeavouring?
could they be endeavouring? 	could I have endeavoured?
could you have endeavoured?
could he have endeavoured?
could we have endeavoured?
could you have endeavoured?
could they have endeavoured? 	could I have been endeavouring?
could you have been endeavouring?
could he have been endeavouring?
could we have been endeavouring?
could you have been endeavouring?
could they have been endeavouring? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I endeavour?
couldn't you endeavour?
couldn't he endeavour?
couldn't we endeavour?
couldn't you endeavour?
couldn't they endeavour? 	couldn't I be endeavouring?
couldn't you be endeavouring?
couldn't he be endeavouring?
couldn't we be endeavouring?
couldn't you be endeavouring?
couldn't they be endeavouring? 	couldn't I have endeavoured?
couldn't you have endeavoured?
couldn't he have endeavoured?
couldn't we have endeavoured?
couldn't you have endeavoured?
couldn't they have endeavoured? 	couldn't I have been endeavouring?
couldn't you have been endeavouring?
couldn't he have been endeavouring?
couldn't we have been endeavouring?
couldn't you have been endeavouring?
couldn't they have been endeavouring?