I must pot you must pot he must pot we must pot you must pot they must pot
V-ing form
I must be potting you must be potting he must be potting we must be potting you must be potting they must be potting
Perfect
I must have potted you must have potted he 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 he 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 he 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 he 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 he 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 he 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 he pot? must we pot? must you pot? must they pot?
V-ing form
must I be potting? must you be potting? must he be potting? must we be potting? must you be potting? must they be potting?
Perfect
must I have potted? must you have potted? must he 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 he 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 he 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 he 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 he 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 he have been potting? mustn't we have been potting? mustn't you have been potting? mustn't they have been potting?