English verb conjugation
MUST IMPERIL

Regular verb: imperil - imperilled - imperilled

Affirmation

Simple form	V-ing form
I must imperil you must imperil he must imperil we must imperil you must imperil they must imperil	I must be imperilling you must be imperilling he must be imperilling we must be imperilling you must be imperilling they must be imperilling
Perfect	V-ing perfect
I must have imperilled you must have imperilled he must have imperilled we must have imperilled you must have imperilled they must have imperilled	I must have been imperilling you must have been imperilling he must have been imperilling we must have been imperilling you must have been imperilling they must have been imperilling

Negation

Simple form	V-ing form
I mustn't imperil you mustn't imperil he mustn't imperil we mustn't imperil you mustn't imperil they mustn't imperil	I mustn't be imperilling you mustn't be imperilling he mustn't be imperilling we mustn't be imperilling you mustn't be imperilling they mustn't be imperilling
Perfect	V-ing perfect
I mustn't have imperilled you mustn't have imperilled he mustn't have imperilled we mustn't have imperilled you mustn't have imperilled they mustn't have imperilled	I mustn't have been imperilling you mustn't have been imperilling he mustn't have been imperilling we mustn't have been imperilling you mustn't have been imperilling they mustn't have been imperilling

Interrogative form

Simple form	V-ing form
must I imperil? must you imperil? must he imperil? must we imperil? must you imperil? must they imperil?	must I be imperilling? must you be imperilling? must he be imperilling? must we be imperilling? must you be imperilling? must they be imperilling?
Perfect	V-ing perfect
must I have imperilled? must you have imperilled? must he have imperilled? must we have imperilled? must you have imperilled? must they have imperilled?	must I have been imperilling? must you have been imperilling? must he have been imperilling? must we have been imperilling? must you have been imperilling? must they have been imperilling?

Interro-negative form

Simple form	V-ing form
mustn't I imperil? mustn't you imperil? mustn't he imperil? mustn't we imperil? mustn't you imperil? mustn't they imperil?	mustn't I be imperilling? mustn't you be imperilling? mustn't he be imperilling? mustn't we be imperilling? mustn't you be imperilling? mustn't they be imperilling?
Perfect	V-ing perfect
mustn't I have imperilled? mustn't you have imperilled? mustn't he have imperilled? mustn't we have imperilled? mustn't you have imperilled? mustn't they have imperilled?	mustn't I have been imperilling? mustn't you have been imperilling? mustn't he have been imperilling? mustn't we have been imperilling? mustn't you have been imperilling? mustn't they have been imperilling?