English verb conjugation
MUST RUCK

Regular verb: ruck - rucked - rucked

Affirmation

Simple form	V-ing form
I must ruck you must ruck he must ruck we must ruck you must ruck they must ruck	I must be rucking you must be rucking he must be rucking we must be rucking you must be rucking they must be rucking
Perfect	V-ing perfect
I must have rucked you must have rucked he must have rucked we must have rucked you must have rucked they must have rucked	I must have been rucking you must have been rucking he must have been rucking we must have been rucking you must have been rucking they must have been rucking

Negation

Simple form	V-ing form
I mustn't ruck you mustn't ruck he mustn't ruck we mustn't ruck you mustn't ruck they mustn't ruck	I mustn't be rucking you mustn't be rucking he mustn't be rucking we mustn't be rucking you mustn't be rucking they mustn't be rucking
Perfect	V-ing perfect
I mustn't have rucked you mustn't have rucked he mustn't have rucked we mustn't have rucked you mustn't have rucked they mustn't have rucked	I mustn't have been rucking you mustn't have been rucking he mustn't have been rucking we mustn't have been rucking you mustn't have been rucking they mustn't have been rucking

Interrogative form

Simple form	V-ing form
must I ruck? must you ruck? must he ruck? must we ruck? must you ruck? must they ruck?	must I be rucking? must you be rucking? must he be rucking? must we be rucking? must you be rucking? must they be rucking?
Perfect	V-ing perfect
must I have rucked? must you have rucked? must he have rucked? must we have rucked? must you have rucked? must they have rucked?	must I have been rucking? must you have been rucking? must he have been rucking? must we have been rucking? must you have been rucking? must they have been rucking?

Interro-negative form

Simple form	V-ing form
mustn't I ruck? mustn't you ruck? mustn't he ruck? mustn't we ruck? mustn't you ruck? mustn't they ruck?	mustn't I be rucking? mustn't you be rucking? mustn't he be rucking? mustn't we be rucking? mustn't you be rucking? mustn't they be rucking?
Perfect	V-ing perfect
mustn't I have rucked? mustn't you have rucked? mustn't he have rucked? mustn't we have rucked? mustn't you have rucked? mustn't they have rucked?	mustn't I have been rucking? mustn't you have been rucking? mustn't he have been rucking? mustn't we have been rucking? mustn't you have been rucking? mustn't they have been rucking?