could till
Verbo regular: till - tilled- tilled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could till
you could till
he could till
we could till
you could till
they could till 	I could be tilling
you could be tilling
he could be tilling
we could be tilling
you could be tilling
they could be tilling	I could have tilled
you could have tilled
he could have tilled
we could have tilled
you could have tilled
they could have tilled	I could have been tilling
you could have been tilling
he could have been tilling
we could have been tilling
you could have been tilling
they could have been tilling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't till
you couldn't till
he couldn't till
we couldn't till
you couldn't till
they couldn't till 	I couldn't be tilling
you couldn't be tilling
he couldn't be tilling
we couldn't be tilling
you couldn't be tilling
they couldn't be tilling	I couldn't have tilled
you couldn't have tilled
he couldn't have tilled
we couldn't have tilled
you couldn't have tilled
they couldn't have tilled	I couldn't have been tilling
you couldn't have been tilling
he couldn't have been tilling
we couldn't have been tilling
you couldn't have been tilling
they couldn't have been tilling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I till?
could you till?
could he till?
could we till?
could you till?
could they till? 	could I be tilling?
could you be tilling?
could he be tilling?
could we be tilling?
could you be tilling?
could they be tilling? 	could I have tilled?
could you have tilled?
could he have tilled?
could we have tilled?
could you have tilled?
could they have tilled? 	could I have been tilling?
could you have been tilling?
could he have been tilling?
could we have been tilling?
could you have been tilling?
could they have been tilling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I till?
couldn't you till?
couldn't he till?
couldn't we till?
couldn't you till?
couldn't they till? 	couldn't I be tilling?
couldn't you be tilling?
couldn't he be tilling?
couldn't we be tilling?
couldn't you be tilling?
couldn't they be tilling? 	couldn't I have tilled?
couldn't you have tilled?
couldn't he have tilled?
couldn't we have tilled?
couldn't you have tilled?
couldn't they have tilled? 	couldn't I have been tilling?
couldn't you have been tilling?
couldn't he have been tilling?
couldn't we have been tilling?
couldn't you have been tilling?
couldn't they have been tilling?