English verb conjugation
MUST IMPOUND

Regular verb: impound - impounded - impounded

Affirmation

Simple form	V-ing form
I must impound you must impound he must impound we must impound you must impound they must impound	I must be impounding you must be impounding he must be impounding we must be impounding you must be impounding they must be impounding
Perfect	V-ing perfect
I must have impounded you must have impounded he must have impounded we must have impounded you must have impounded they must have impounded	I must have been impounding you must have been impounding he must have been impounding we must have been impounding you must have been impounding they must have been impounding

Negation

Simple form	V-ing form
I mustn't impound you mustn't impound he mustn't impound we mustn't impound you mustn't impound they mustn't impound	I mustn't be impounding you mustn't be impounding he mustn't be impounding we mustn't be impounding you mustn't be impounding they mustn't be impounding
Perfect	V-ing perfect
I mustn't have impounded you mustn't have impounded he mustn't have impounded we mustn't have impounded you mustn't have impounded they mustn't have impounded	I mustn't have been impounding you mustn't have been impounding he mustn't have been impounding we mustn't have been impounding you mustn't have been impounding they mustn't have been impounding

Interrogative form

Simple form	V-ing form
must I impound? must you impound? must he impound? must we impound? must you impound? must they impound?	must I be impounding? must you be impounding? must he be impounding? must we be impounding? must you be impounding? must they be impounding?
Perfect	V-ing perfect
must I have impounded? must you have impounded? must he have impounded? must we have impounded? must you have impounded? must they have impounded?	must I have been impounding? must you have been impounding? must he have been impounding? must we have been impounding? must you have been impounding? must they have been impounding?

Interro-negative form

Simple form	V-ing form
mustn't I impound? mustn't you impound? mustn't he impound? mustn't we impound? mustn't you impound? mustn't they impound?	mustn't I be impounding? mustn't you be impounding? mustn't he be impounding? mustn't we be impounding? mustn't you be impounding? mustn't they be impounding?
Perfect	V-ing perfect
mustn't I have impounded? mustn't you have impounded? mustn't he have impounded? mustn't we have impounded? mustn't you have impounded? mustn't they have impounded?	mustn't I have been impounding? mustn't you have been impounding? mustn't he have been impounding? mustn't we have been impounding? mustn't you have been impounding? mustn't they have been impounding?