English verb conjugation
MUST CRUTCH

Regular verb: crutch - crutched - crutched

Affirmation

Simple form	V-ing form
I must crutch you must crutch he must crutch we must crutch you must crutch they must crutch	I must be crutching you must be crutching he must be crutching we must be crutching you must be crutching they must be crutching
Perfect	V-ing perfect
I must have crutched you must have crutched he must have crutched we must have crutched you must have crutched they must have crutched	I must have been crutching you must have been crutching he must have been crutching we must have been crutching you must have been crutching they must have been crutching

Negation

Simple form	V-ing form
I mustn't crutch you mustn't crutch he mustn't crutch we mustn't crutch you mustn't crutch they mustn't crutch	I mustn't be crutching you mustn't be crutching he mustn't be crutching we mustn't be crutching you mustn't be crutching they mustn't be crutching
Perfect	V-ing perfect
I mustn't have crutched you mustn't have crutched he mustn't have crutched we mustn't have crutched you mustn't have crutched they mustn't have crutched	I mustn't have been crutching you mustn't have been crutching he mustn't have been crutching we mustn't have been crutching you mustn't have been crutching they mustn't have been crutching

Interrogative form

Simple form	V-ing form
must I crutch? must you crutch? must he crutch? must we crutch? must you crutch? must they crutch?	must I be crutching? must you be crutching? must he be crutching? must we be crutching? must you be crutching? must they be crutching?
Perfect	V-ing perfect
must I have crutched? must you have crutched? must he have crutched? must we have crutched? must you have crutched? must they have crutched?	must I have been crutching? must you have been crutching? must he have been crutching? must we have been crutching? must you have been crutching? must they have been crutching?

Interro-negative form

Simple form	V-ing form
mustn't I crutch? mustn't you crutch? mustn't he crutch? mustn't we crutch? mustn't you crutch? mustn't they crutch?	mustn't I be crutching? mustn't you be crutching? mustn't he be crutching? mustn't we be crutching? mustn't you be crutching? mustn't they be crutching?
Perfect	V-ing perfect
mustn't I have crutched? mustn't you have crutched? mustn't he have crutched? mustn't we have crutched? mustn't you have crutched? mustn't they have crutched?	mustn't I have been crutching? mustn't you have been crutching? mustn't he have been crutching? mustn't we have been crutching? mustn't you have been crutching? mustn't they have been crutching?