must rift
Verbo regular: rift - rifted- rifted

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must rift
you must rift
he must rift
we must rift
you must rift
they must rift 	I must be rifting
you must be rifting
he must be rifting
we must be rifting
you must be rifting
they must be rifting	I must have rifted
you must have rifted
he must have rifted
we must have rifted
you must have rifted
they must have rifted	I must have been rifting
you must have been rifting
he must have been rifting
we must have been rifting
you must have been rifting
they must have been rifting	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not rift
you must not rift
he must not rift
we must not rift
you must not rift
they must not rift 	I must not be rifting
you must not be rifting
he must not be rifting
we must not be rifting
you must not be rifting
they must not be rifting	I must not have rifted
you must not have rifted
he must not have rifted
we must not have rifted
you must not have rifted
they must not have rifted	I must not have been rifting
you must not have been rifting
he must not have been rifting
we must not have been rifting
you must not have been rifting
they must not have been rifting	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I rift?
must you rift?
must he rift?
must we rift?
must you rift?
must they rift? 	must I be rifting?
must you be rifting?
must he be rifting?
must we be rifting?
must you be rifting?
must they be rifting? 	must I have rifted?
must you have rifted?
must he have rifted?
must we have rifted?
must you have rifted?
must they have rifted? 	must I have been rifting?
must you have been rifting?
must he have been rifting?
must we have been rifting?
must you have been rifting?
must they have been rifting? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not rift?
must you not rift?
must he not rift?
must we not rift?
must you not rift?
must they not rift? 	must I not be rifting?
must you not be rifting?
must he not be rifting?
must we not be rifting?
must you not be rifting?
must they not be rifting? 	must I not have rifted?
must you not have rifted?
must he not have rifted?
must we not have rifted?
must you not have rifted?
must they not have rifted? 	must I not have been rifting?
must you not have been rifting?
must he not have been rifting?
must we not have been rifting?
must you not have been rifting?
must they not have been rifting?