must prep
Verbo regular: prep - preped- preped

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must prep
you must prep
she must prep
we must prep
you must prep
they must prep 	I must be preping
you must be preping
she must be preping
we must be preping
you must be preping
they must be preping	I must have preped
you must have preped
she must have preped
we must have preped
you must have preped
they must have preped	I must have been preping
you must have been preping
she must have been preping
we must have been preping
you must have been preping
they must have been preping	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not prep
you must not prep
she must not prep
we must not prep
you must not prep
they must not prep 	I must not be preping
you must not be preping
she must not be preping
we must not be preping
you must not be preping
they must not be preping	I must not have preped
you must not have preped
she must not have preped
we must not have preped
you must not have preped
they must not have preped	I must not have been preping
you must not have been preping
she must not have been preping
we must not have been preping
you must not have been preping
they must not have been preping	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I prep?
must you prep?
must she prep?
must we prep?
must you prep?
must they prep? 	must I be preping?
must you be preping?
must she be preping?
must we be preping?
must you be preping?
must they be preping? 	must I have preped?
must you have preped?
must she have preped?
must we have preped?
must you have preped?
must they have preped? 	must I have been preping?
must you have been preping?
must she have been preping?
must we have been preping?
must you have been preping?
must they have been preping? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not prep?
must you not prep?
must she not prep?
must we not prep?
must you not prep?
must they not prep? 	must I not be preping?
must you not be preping?
must she not be preping?
must we not be preping?
must you not be preping?
must they not be preping? 	must I not have preped?
must you not have preped?
must she not have preped?
must we not have preped?
must you not have preped?
must they not have preped? 	must I not have been preping?
must you not have been preping?
must she not have been preping?
must we not have been preping?
must you not have been preping?
must they not have been preping?