English verb conjugation
MUST SUBTOTAL

Regular verb: subtotal - subtotaled - subtotaled

Affirmation

Simple form	V-ing form
I must subtotal you must subtotal he must subtotal we must subtotal you must subtotal they must subtotal	I must be subtotaling you must be subtotaling he must be subtotaling we must be subtotaling you must be subtotaling they must be subtotaling
Perfect	V-ing perfect
I must have subtotaled you must have subtotaled he must have subtotaled we must have subtotaled you must have subtotaled they must have subtotaled	I must have been subtotaling you must have been subtotaling he must have been subtotaling we must have been subtotaling you must have been subtotaling they must have been subtotaling

Negation

Simple form	V-ing form
I mustn't subtotal you mustn't subtotal he mustn't subtotal we mustn't subtotal you mustn't subtotal they mustn't subtotal	I mustn't be subtotaling you mustn't be subtotaling he mustn't be subtotaling we mustn't be subtotaling you mustn't be subtotaling they mustn't be subtotaling
Perfect	V-ing perfect
I mustn't have subtotaled you mustn't have subtotaled he mustn't have subtotaled we mustn't have subtotaled you mustn't have subtotaled they mustn't have subtotaled	I mustn't have been subtotaling you mustn't have been subtotaling he mustn't have been subtotaling we mustn't have been subtotaling you mustn't have been subtotaling they mustn't have been subtotaling

Interrogative form

Simple form	V-ing form
must I subtotal? must you subtotal? must he subtotal? must we subtotal? must you subtotal? must they subtotal?	must I be subtotaling? must you be subtotaling? must he be subtotaling? must we be subtotaling? must you be subtotaling? must they be subtotaling?
Perfect	V-ing perfect
must I have subtotaled? must you have subtotaled? must he have subtotaled? must we have subtotaled? must you have subtotaled? must they have subtotaled?	must I have been subtotaling? must you have been subtotaling? must he have been subtotaling? must we have been subtotaling? must you have been subtotaling? must they have been subtotaling?

Interro-negative form

Simple form	V-ing form
mustn't I subtotal? mustn't you subtotal? mustn't he subtotal? mustn't we subtotal? mustn't you subtotal? mustn't they subtotal?	mustn't I be subtotaling? mustn't you be subtotaling? mustn't he be subtotaling? mustn't we be subtotaling? mustn't you be subtotaling? mustn't they be subtotaling?
Perfect	V-ing perfect
mustn't I have subtotaled? mustn't you have subtotaled? mustn't he have subtotaled? mustn't we have subtotaled? mustn't you have subtotaled? mustn't they have subtotaled?	mustn't I have been subtotaling? mustn't you have been subtotaling? mustn't he have been subtotaling? mustn't we have been subtotaling? mustn't you have been subtotaling? mustn't they have been subtotaling?