English verb conjugation
MUST SPADE

Regular verb: spade - spaded - spaded

Affirmation

Simple form	V-ing form
I must spade you must spade she must spade we must spade you must spade they must spade	I must be spading you must be spading she must be spading we must be spading you must be spading they must be spading
Perfect	V-ing perfect
I must have spaded you must have spaded she must have spaded we must have spaded you must have spaded they must have spaded	I must have been spading you must have been spading she must have been spading we must have been spading you must have been spading they must have been spading

Negation

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

Interrogative form

Simple form	V-ing form
must I spade? must you spade? must she spade? must we spade? must you spade? must they spade?	must I be spading? must you be spading? must she be spading? must we be spading? must you be spading? must they be spading?
Perfect	V-ing perfect
must I have spaded? must you have spaded? must she have spaded? must we have spaded? must you have spaded? must they have spaded?	must I have been spading? must you have been spading? must she have been spading? must we have been spading? must you have been spading? must they have been spading?

Interro-negative form

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