English verb conjugation
MUST CONVULSE

Regular verb: convulse - convulsed - convulsed

Affirmation

Simple form	V-ing form
I must convulse you must convulse he must convulse we must convulse you must convulse they must convulse	I must be convulsing you must be convulsing he must be convulsing we must be convulsing you must be convulsing they must be convulsing
Perfect	V-ing perfect
I must have convulsed you must have convulsed he must have convulsed we must have convulsed you must have convulsed they must have convulsed	I must have been convulsing you must have been convulsing he must have been convulsing we must have been convulsing you must have been convulsing they must have been convulsing

Negation

Simple form	V-ing form
I mustn't convulse you mustn't convulse he mustn't convulse we mustn't convulse you mustn't convulse they mustn't convulse	I mustn't be convulsing you mustn't be convulsing he mustn't be convulsing we mustn't be convulsing you mustn't be convulsing they mustn't be convulsing
Perfect	V-ing perfect
I mustn't have convulsed you mustn't have convulsed he mustn't have convulsed we mustn't have convulsed you mustn't have convulsed they mustn't have convulsed	I mustn't have been convulsing you mustn't have been convulsing he mustn't have been convulsing we mustn't have been convulsing you mustn't have been convulsing they mustn't have been convulsing

Interrogative form

Simple form	V-ing form
must I convulse? must you convulse? must he convulse? must we convulse? must you convulse? must they convulse?	must I be convulsing? must you be convulsing? must he be convulsing? must we be convulsing? must you be convulsing? must they be convulsing?
Perfect	V-ing perfect
must I have convulsed? must you have convulsed? must he have convulsed? must we have convulsed? must you have convulsed? must they have convulsed?	must I have been convulsing? must you have been convulsing? must he have been convulsing? must we have been convulsing? must you have been convulsing? must they have been convulsing?

Interro-negative form

Simple form	V-ing form
mustn't I convulse? mustn't you convulse? mustn't he convulse? mustn't we convulse? mustn't you convulse? mustn't they convulse?	mustn't I be convulsing? mustn't you be convulsing? mustn't he be convulsing? mustn't we be convulsing? mustn't you be convulsing? mustn't they be convulsing?
Perfect	V-ing perfect
mustn't I have convulsed? mustn't you have convulsed? mustn't he have convulsed? mustn't we have convulsed? mustn't you have convulsed? mustn't they have convulsed?	mustn't I have been convulsing? mustn't you have been convulsing? mustn't he have been convulsing? mustn't we have been convulsing? mustn't you have been convulsing? mustn't they have been convulsing?