could spade
Regular verb: spade - spaded- spaded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could spade
you could spade
he could spade
we could spade
you could spade
they could spade 	I could be spading
you could be spading
he could be spading
we could be spading
you could be spading
they could be spading	I could have spaded
you could have spaded
he could have spaded
we could have spaded
you could have spaded
they could have spaded	I could have been spading
you could have been spading
he could have been spading
we could have been spading
you could have been spading
they could have been spading	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't spade
you couldn't spade
he couldn't spade
we couldn't spade
you couldn't spade
they couldn't spade 	I couldn't be spading
you couldn't be spading
he couldn't be spading
we couldn't be spading
you couldn't be spading
they couldn't be spading	I couldn't have spaded
you couldn't have spaded
he couldn't have spaded
we couldn't have spaded
you couldn't have spaded
they couldn't have spaded	I couldn't have been spading
you couldn't have been spading
he couldn't have been spading
we couldn't have been spading
you couldn't have been spading
they couldn't have been spading	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I spade?
could you spade?
could he spade?
could we spade?
could you spade?
could they spade? 	could I be spading?
could you be spading?
could he be spading?
could we be spading?
could you be spading?
could they be spading? 	could I have spaded?
could you have spaded?
could he have spaded?
could we have spaded?
could you have spaded?
could they have spaded? 	could I have been spading?
could you have been spading?
could he have been spading?
could we have been spading?
could you have been spading?
could they have been spading? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I spade?
couldn't you spade?
couldn't he spade?
couldn't we spade?
couldn't you spade?
couldn't they spade? 	couldn't I be spading?
couldn't you be spading?
couldn't he be spading?
couldn't we be spading?
couldn't you be spading?
couldn't they be spading? 	couldn't I have spaded?
couldn't you have spaded?
couldn't he have spaded?
couldn't we have spaded?
couldn't you have spaded?
couldn't they have spaded? 	couldn't I have been spading?
couldn't you have been spading?
couldn't he have been spading?
couldn't we have been spading?
couldn't you have been spading?
couldn't they have been spading?