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