must rot
Verbo regular: rot - rotted- rotted

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must rot
you must rot
she must rot
we must rot
you must rot
they must rot 	I must be rotting
you must be rotting
she must be rotting
we must be rotting
you must be rotting
they must be rotting	I must have rotted
you must have rotted
she must have rotted
we must have rotted
you must have rotted
they must have rotted	I must have been rotting
you must have been rotting
she must have been rotting
we must have been rotting
you must have been rotting
they must have been rotting	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not rot
you must not rot
she must not rot
we must not rot
you must not rot
they must not rot 	I must not be rotting
you must not be rotting
she must not be rotting
we must not be rotting
you must not be rotting
they must not be rotting	I must not have rotted
you must not have rotted
she must not have rotted
we must not have rotted
you must not have rotted
they must not have rotted	I must not have been rotting
you must not have been rotting
she must not have been rotting
we must not have been rotting
you must not have been rotting
they must not have been rotting	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I rot?
must you rot?
must she rot?
must we rot?
must you rot?
must they rot? 	must I be rotting?
must you be rotting?
must she be rotting?
must we be rotting?
must you be rotting?
must they be rotting? 	must I have rotted?
must you have rotted?
must she have rotted?
must we have rotted?
must you have rotted?
must they have rotted? 	must I have been rotting?
must you have been rotting?
must she have been rotting?
must we have been rotting?
must you have been rotting?
must they have been rotting? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not rot?
must you not rot?
must she not rot?
must we not rot?
must you not rot?
must they not rot? 	must I not be rotting?
must you not be rotting?
must she not be rotting?
must we not be rotting?
must you not be rotting?
must they not be rotting? 	must I not have rotted?
must you not have rotted?
must she not have rotted?
must we not have rotted?
must you not have rotted?
must they not have rotted? 	must I not have been rotting?
must you not have been rotting?
must she not have been rotting?
must we not have been rotting?
must you not have been rotting?
must they not have been rotting?