must stand
Irregular verb: stand - stood- stood

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must stand
you must stand
he must stand
we must stand
you must stand
they must stand 	I must be standing
you must be standing
he must be standing
we must be standing
you must be standing
they must be standing	I must have stood
you must have stood
he must have stood
we must have stood
you must have stood
they must have stood	I must have been standing
you must have been standing
he must have been standing
we must have been standing
you must have been standing
they must have been standing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not stand
you must not stand
he must not stand
we must not stand
you must not stand
they must not stand 	I must not be standing
you must not be standing
he must not be standing
we must not be standing
you must not be standing
they must not be standing	I must not have stood
you must not have stood
he must not have stood
we must not have stood
you must not have stood
they must not have stood	I must not have been standing
you must not have been standing
he must not have been standing
we must not have been standing
you must not have been standing
they must not have been standing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I stand?
must you stand?
must he stand?
must we stand?
must you stand?
must they stand? 	must I be standing?
must you be standing?
must he be standing?
must we be standing?
must you be standing?
must they be standing? 	must I have stood?
must you have stood?
must he have stood?
must we have stood?
must you have stood?
must they have stood? 	must I have been standing?
must you have been standing?
must he have been standing?
must we have been standing?
must you have been standing?
must they have been standing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not stand?
must you not stand?
must he not stand?
must we not stand?
must you not stand?
must they not stand? 	must I not be standing?
must you not be standing?
must he not be standing?
must we not be standing?
must you not be standing?
must they not be standing? 	must I not have stood?
must you not have stood?
must he not have stood?
must we not have stood?
must you not have stood?
must they not have stood? 	must I not have been standing?
must you not have been standing?
must he not have been standing?
must we not have been standing?
must you not have been standing?
must they not have been standing?