English verb conjugation
MUST COUNTERPOISE

Regular verb: counterpoise - counterpoised - counterpoised

Affirmation

Simple form	V-ing form
I must counterpoise you must counterpoise he must counterpoise we must counterpoise you must counterpoise they must counterpoise	I must be counterpoising you must be counterpoising he must be counterpoising we must be counterpoising you must be counterpoising they must be counterpoising
Perfect	V-ing perfect
I must have counterpoised you must have counterpoised he must have counterpoised we must have counterpoised you must have counterpoised they must have counterpoised	I must have been counterpoising you must have been counterpoising he must have been counterpoising we must have been counterpoising you must have been counterpoising they must have been counterpoising

Negation

Simple form	V-ing form
I mustn't counterpoise you mustn't counterpoise he mustn't counterpoise we mustn't counterpoise you mustn't counterpoise they mustn't counterpoise	I mustn't be counterpoising you mustn't be counterpoising he mustn't be counterpoising we mustn't be counterpoising you mustn't be counterpoising they mustn't be counterpoising
Perfect	V-ing perfect
I mustn't have counterpoised you mustn't have counterpoised he mustn't have counterpoised we mustn't have counterpoised you mustn't have counterpoised they mustn't have counterpoised	I mustn't have been counterpoising you mustn't have been counterpoising he mustn't have been counterpoising we mustn't have been counterpoising you mustn't have been counterpoising they mustn't have been counterpoising

Interrogative form

Simple form	V-ing form
must I counterpoise? must you counterpoise? must he counterpoise? must we counterpoise? must you counterpoise? must they counterpoise?	must I be counterpoising? must you be counterpoising? must he be counterpoising? must we be counterpoising? must you be counterpoising? must they be counterpoising?
Perfect	V-ing perfect
must I have counterpoised? must you have counterpoised? must he have counterpoised? must we have counterpoised? must you have counterpoised? must they have counterpoised?	must I have been counterpoising? must you have been counterpoising? must he have been counterpoising? must we have been counterpoising? must you have been counterpoising? must they have been counterpoising?

Interro-negative form

Simple form	V-ing form
mustn't I counterpoise? mustn't you counterpoise? mustn't he counterpoise? mustn't we counterpoise? mustn't you counterpoise? mustn't they counterpoise?	mustn't I be counterpoising? mustn't you be counterpoising? mustn't he be counterpoising? mustn't we be counterpoising? mustn't you be counterpoising? mustn't they be counterpoising?
Perfect	V-ing perfect
mustn't I have counterpoised? mustn't you have counterpoised? mustn't he have counterpoised? mustn't we have counterpoised? mustn't you have counterpoised? mustn't they have counterpoised?	mustn't I have been counterpoising? mustn't you have been counterpoising? mustn't he have been counterpoising? mustn't we have been counterpoising? mustn't you have been counterpoising? mustn't they have been counterpoising?