English verb conjugation
MUST SPUD

Regular verb: spud - spudded - spudded

Affirmation

Simple form	V-ing form
I must spud you must spud he must spud we must spud you must spud they must spud	I must be spudding you must be spudding he must be spudding we must be spudding you must be spudding they must be spudding
Perfect	V-ing perfect
I must have spudded you must have spudded he must have spudded we must have spudded you must have spudded they must have spudded	I must have been spudding you must have been spudding he must have been spudding we must have been spudding you must have been spudding they must have been spudding

Negation

Simple form	V-ing form
I mustn't spud you mustn't spud he mustn't spud we mustn't spud you mustn't spud they mustn't spud	I mustn't be spudding you mustn't be spudding he mustn't be spudding we mustn't be spudding you mustn't be spudding they mustn't be spudding
Perfect	V-ing perfect
I mustn't have spudded you mustn't have spudded he mustn't have spudded we mustn't have spudded you mustn't have spudded they mustn't have spudded	I mustn't have been spudding you mustn't have been spudding he mustn't have been spudding we mustn't have been spudding you mustn't have been spudding they mustn't have been spudding

Interrogative form

Simple form	V-ing form
must I spud? must you spud? must he spud? must we spud? must you spud? must they spud?	must I be spudding? must you be spudding? must he be spudding? must we be spudding? must you be spudding? must they be spudding?
Perfect	V-ing perfect
must I have spudded? must you have spudded? must he have spudded? must we have spudded? must you have spudded? must they have spudded?	must I have been spudding? must you have been spudding? must he have been spudding? must we have been spudding? must you have been spudding? must they have been spudding?

Interro-negative form

Simple form	V-ing form
mustn't I spud? mustn't you spud? mustn't he spud? mustn't we spud? mustn't you spud? mustn't they spud?	mustn't I be spudding? mustn't you be spudding? mustn't he be spudding? mustn't we be spudding? mustn't you be spudding? mustn't they be spudding?
Perfect	V-ing perfect
mustn't I have spudded? mustn't you have spudded? mustn't he have spudded? mustn't we have spudded? mustn't you have spudded? mustn't they have spudded?	mustn't I have been spudding? mustn't you have been spudding? mustn't he have been spudding? mustn't we have been spudding? mustn't you have been spudding? mustn't they have been spudding?