could stave
Irregular verb: stave - staved, stove- staved, stove

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could stave
you could stave
he could stave
we could stave
you could stave
they could stave 	I could be staving
you could be staving
he could be staving
we could be staving
you could be staving
they could be staving	I could have staved, stove
you could have staved, stove
he could have staved, stove
we could have staved, stove
you could have staved, stove
they could have staved, stove	I could have been staving
you could have been staving
he could have been staving
we could have been staving
you could have been staving
they could have been staving	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't stave
you couldn't stave
he couldn't stave
we couldn't stave
you couldn't stave
they couldn't stave 	I couldn't be staving
you couldn't be staving
he couldn't be staving
we couldn't be staving
you couldn't be staving
they couldn't be staving	I couldn't have staved, stove
you couldn't have staved, stove
he couldn't have staved, stove
we couldn't have staved, stove
you couldn't have staved, stove
they couldn't have staved, stove	I couldn't have been staving
you couldn't have been staving
he couldn't have been staving
we couldn't have been staving
you couldn't have been staving
they couldn't have been staving	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I stave?
could you stave?
could he stave?
could we stave?
could you stave?
could they stave? 	could I be staving?
could you be staving?
could he be staving?
could we be staving?
could you be staving?
could they be staving? 	could I have staved, stove?
could you have staved, stove?
could he have staved, stove?
could we have staved, stove?
could you have staved, stove?
could they have staved, stove? 	could I have been staving?
could you have been staving?
could he have been staving?
could we have been staving?
could you have been staving?
could they have been staving? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I stave?
couldn't you stave?
couldn't he stave?
couldn't we stave?
couldn't you stave?
couldn't they stave? 	couldn't I be staving?
couldn't you be staving?
couldn't he be staving?
couldn't we be staving?
couldn't you be staving?
couldn't they be staving? 	couldn't I have staved, stove?
couldn't you have staved, stove?
couldn't he have staved, stove?
couldn't we have staved, stove?
couldn't you have staved, stove?
couldn't they have staved, stove? 	couldn't I have been staving?
couldn't you have been staving?
couldn't he have been staving?
couldn't we have been staving?
couldn't you have been staving?
couldn't they have been staving?