English verb conjugation
MUST CALLUS

Regular verb: callus - callused - callused

Affirmation

Simple form	V-ing form
I must callus you must callus she must callus we must callus you must callus they must callus	I must be callusing you must be callusing she must be callusing we must be callusing you must be callusing they must be callusing
Perfect	V-ing perfect
I must have callused you must have callused she must have callused we must have callused you must have callused they must have callused	I must have been callusing you must have been callusing she must have been callusing we must have been callusing you must have been callusing they must have been callusing

Negation

Simple form	V-ing form
I mustn't callus you mustn't callus she mustn't callus we mustn't callus you mustn't callus they mustn't callus	I mustn't be callusing you mustn't be callusing she mustn't be callusing we mustn't be callusing you mustn't be callusing they mustn't be callusing
Perfect	V-ing perfect
I mustn't have callused you mustn't have callused she mustn't have callused we mustn't have callused you mustn't have callused they mustn't have callused	I mustn't have been callusing you mustn't have been callusing she mustn't have been callusing we mustn't have been callusing you mustn't have been callusing they mustn't have been callusing

Interrogative form

Simple form	V-ing form
must I callus? must you callus? must she callus? must we callus? must you callus? must they callus?	must I be callusing? must you be callusing? must she be callusing? must we be callusing? must you be callusing? must they be callusing?
Perfect	V-ing perfect
must I have callused? must you have callused? must she have callused? must we have callused? must you have callused? must they have callused?	must I have been callusing? must you have been callusing? must she have been callusing? must we have been callusing? must you have been callusing? must they have been callusing?

Interro-negative form

Simple form	V-ing form
mustn't I callus? mustn't you callus? mustn't she callus? mustn't we callus? mustn't you callus? mustn't they callus?	mustn't I be callusing? mustn't you be callusing? mustn't she be callusing? mustn't we be callusing? mustn't you be callusing? mustn't they be callusing?
Perfect	V-ing perfect
mustn't I have callused? mustn't you have callused? mustn't she have callused? mustn't we have callused? mustn't you have callused? mustn't they have callused?	mustn't I have been callusing? mustn't you have been callusing? mustn't she have been callusing? mustn't we have been callusing? mustn't you have been callusing? mustn't they have been callusing?