English verb conjugation
COULD SPADE

Regular verb: spade - spaded - spaded

Affirmation

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