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