I must avulse you must avulse she must avulse we must avulse you must avulse they must avulse
V-ing form
I must be avulsing you must be avulsing she must be avulsing we must be avulsing you must be avulsing they must be avulsing
Perfect
I must have avulsed you must have avulsed she must have avulsed we must have avulsed you must have avulsed they must have avulsed
V-ing perfect
I must have been avulsing you must have been avulsing she must have been avulsing we must have been avulsing you must have been avulsing they must have been avulsing
Negation
Simple form
I mustn't avulse you mustn't avulse she mustn't avulse we mustn't avulse you mustn't avulse they mustn't avulse
V-ing form
I mustn't be avulsing you mustn't be avulsing she mustn't be avulsing we mustn't be avulsing you mustn't be avulsing they mustn't be avulsing
Perfect
I mustn't have avulsed you mustn't have avulsed she mustn't have avulsed we mustn't have avulsed you mustn't have avulsed they mustn't have avulsed
V-ing perfect
I mustn't have been avulsing you mustn't have been avulsing she mustn't have been avulsing we mustn't have been avulsing you mustn't have been avulsing they mustn't have been avulsing
Interrogative form
Simple form
must I avulse? must you avulse? must she avulse? must we avulse? must you avulse? must they avulse?
V-ing form
must I be avulsing? must you be avulsing? must she be avulsing? must we be avulsing? must you be avulsing? must they be avulsing?
Perfect
must I have avulsed? must you have avulsed? must she have avulsed? must we have avulsed? must you have avulsed? must they have avulsed?
V-ing perfect
must I have been avulsing? must you have been avulsing? must she have been avulsing? must we have been avulsing? must you have been avulsing? must they have been avulsing?
Interro-negative form
Simple form
mustn't I avulse? mustn't you avulse? mustn't she avulse? mustn't we avulse? mustn't you avulse? mustn't they avulse?
V-ing form
mustn't I be avulsing? mustn't you be avulsing? mustn't she be avulsing? mustn't we be avulsing? mustn't you be avulsing? mustn't they be avulsing?
Perfect
mustn't I have avulsed? mustn't you have avulsed? mustn't she have avulsed? mustn't we have avulsed? mustn't you have avulsed? mustn't they have avulsed?
V-ing perfect
mustn't I have been avulsing? mustn't you have been avulsing? mustn't she have been avulsing? mustn't we have been avulsing? mustn't you have been avulsing? mustn't they have been avulsing?