must barrack
Verbo regular: barrack - barracked- barracked

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must barrack
you must barrack
she must barrack
we must barrack
you must barrack
they must barrack 	I must be barracking
you must be barracking
she must be barracking
we must be barracking
you must be barracking
they must be barracking	I must have barracked
you must have barracked
she must have barracked
we must have barracked
you must have barracked
they must have barracked	I must have been barracking
you must have been barracking
she must have been barracking
we must have been barracking
you must have been barracking
they must have been barracking	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not barrack
you must not barrack
she must not barrack
we must not barrack
you must not barrack
they must not barrack 	I must not be barracking
you must not be barracking
she must not be barracking
we must not be barracking
you must not be barracking
they must not be barracking	I must not have barracked
you must not have barracked
she must not have barracked
we must not have barracked
you must not have barracked
they must not have barracked	I must not have been barracking
you must not have been barracking
she must not have been barracking
we must not have been barracking
you must not have been barracking
they must not have been barracking	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I barrack?
must you barrack?
must she barrack?
must we barrack?
must you barrack?
must they barrack? 	must I be barracking?
must you be barracking?
must she be barracking?
must we be barracking?
must you be barracking?
must they be barracking? 	must I have barracked?
must you have barracked?
must she have barracked?
must we have barracked?
must you have barracked?
must they have barracked? 	must I have been barracking?
must you have been barracking?
must she have been barracking?
must we have been barracking?
must you have been barracking?
must they have been barracking? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not barrack?
must you not barrack?
must she not barrack?
must we not barrack?
must you not barrack?
must they not barrack? 	must I not be barracking?
must you not be barracking?
must she not be barracking?
must we not be barracking?
must you not be barracking?
must they not be barracking? 	must I not have barracked?
must you not have barracked?
must she not have barracked?
must we not have barracked?
must you not have barracked?
must they not have barracked? 	must I not have been barracking?
must you not have been barracking?
must she not have been barracking?
must we not have been barracking?
must you not have been barracking?
must they not have been barracking?