English verb conjugation
MUST PREDECEASE

Regular verb: predecease - predeceased - predeceased

Affirmation

Simple form	V-ing form
I must predecease you must predecease he must predecease we must predecease you must predecease they must predecease	I must be predeceasing you must be predeceasing he must be predeceasing we must be predeceasing you must be predeceasing they must be predeceasing
Perfect	V-ing perfect
I must have predeceased you must have predeceased he must have predeceased we must have predeceased you must have predeceased they must have predeceased	I must have been predeceasing you must have been predeceasing he must have been predeceasing we must have been predeceasing you must have been predeceasing they must have been predeceasing

Negation

Simple form	V-ing form
I mustn't predecease you mustn't predecease he mustn't predecease we mustn't predecease you mustn't predecease they mustn't predecease	I mustn't be predeceasing you mustn't be predeceasing he mustn't be predeceasing we mustn't be predeceasing you mustn't be predeceasing they mustn't be predeceasing
Perfect	V-ing perfect
I mustn't have predeceased you mustn't have predeceased he mustn't have predeceased we mustn't have predeceased you mustn't have predeceased they mustn't have predeceased	I mustn't have been predeceasing you mustn't have been predeceasing he mustn't have been predeceasing we mustn't have been predeceasing you mustn't have been predeceasing they mustn't have been predeceasing

Interrogative form

Simple form	V-ing form
must I predecease? must you predecease? must he predecease? must we predecease? must you predecease? must they predecease?	must I be predeceasing? must you be predeceasing? must he be predeceasing? must we be predeceasing? must you be predeceasing? must they be predeceasing?
Perfect	V-ing perfect
must I have predeceased? must you have predeceased? must he have predeceased? must we have predeceased? must you have predeceased? must they have predeceased?	must I have been predeceasing? must you have been predeceasing? must he have been predeceasing? must we have been predeceasing? must you have been predeceasing? must they have been predeceasing?

Interro-negative form

Simple form	V-ing form
mustn't I predecease? mustn't you predecease? mustn't he predecease? mustn't we predecease? mustn't you predecease? mustn't they predecease?	mustn't I be predeceasing? mustn't you be predeceasing? mustn't he be predeceasing? mustn't we be predeceasing? mustn't you be predeceasing? mustn't they be predeceasing?
Perfect	V-ing perfect
mustn't I have predeceased? mustn't you have predeceased? mustn't he have predeceased? mustn't we have predeceased? mustn't you have predeceased? mustn't they have predeceased?	mustn't I have been predeceasing? mustn't you have been predeceasing? mustn't he have been predeceasing? mustn't we have been predeceasing? mustn't you have been predeceasing? mustn't they have been predeceasing?