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