could earth
Verbo regular: earth - earthed- earthed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could earth
you could earth
he could earth
we could earth
you could earth
they could earth 	I could be earthing
you could be earthing
he could be earthing
we could be earthing
you could be earthing
they could be earthing	I could have earthed
you could have earthed
he could have earthed
we could have earthed
you could have earthed
they could have earthed	I could have been earthing
you could have been earthing
he could have been earthing
we could have been earthing
you could have been earthing
they could have been earthing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not earth
you could not earth
he could not earth
we could not earth
you could not earth
they could not earth 	I could not be earthing
you could not be earthing
he could not be earthing
we could not be earthing
you could not be earthing
they could not be earthing	I could not have earthed
you could not have earthed
he could not have earthed
we could not have earthed
you could not have earthed
they could not have earthed	I could not have been earthing
you could not have been earthing
he could not have been earthing
we could not have been earthing
you could not have been earthing
they could not have been earthing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I earth?
could you earth?
could he earth?
could we earth?
could you earth?
could they earth? 	could I be earthing?
could you be earthing?
could he be earthing?
could we be earthing?
could you be earthing?
could they be earthing? 	could I have earthed?
could you have earthed?
could he have earthed?
could we have earthed?
could you have earthed?
could they have earthed? 	could I have been earthing?
could you have been earthing?
could he have been earthing?
could we have been earthing?
could you have been earthing?
could they have been earthing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not earth?
could you not earth?
could he not earth?
could we not earth?
could you not earth?
could they not earth? 	could I not be earthing?
could you not be earthing?
could he not be earthing?
could we not be earthing?
could you not be earthing?
could they not be earthing? 	could I not have earthed?
could you not have earthed?
could he not have earthed?
could we not have earthed?
could you not have earthed?
could they not have earthed? 	could I not have been earthing?
could you not have been earthing?
could he not have been earthing?
could we not have been earthing?
could you not have been earthing?
could they not have been earthing?