must delve
Verbo regular: delve - delved- delved

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must delve
you must delve
he must delve
we must delve
you must delve
they must delve 	I must be delving
you must be delving
he must be delving
we must be delving
you must be delving
they must be delving	I must have delved
you must have delved
he must have delved
we must have delved
you must have delved
they must have delved	I must have been delving
you must have been delving
he must have been delving
we must have been delving
you must have been delving
they must have been delving	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't delve
you mustn't delve
he mustn't delve
we mustn't delve
you mustn't delve
they mustn't delve 	I mustn't be delving
you mustn't be delving
he mustn't be delving
we mustn't be delving
you mustn't be delving
they mustn't be delving	I mustn't have delved
you mustn't have delved
he mustn't have delved
we mustn't have delved
you mustn't have delved
they mustn't have delved	I mustn't have been delving
you mustn't have been delving
he mustn't have been delving
we mustn't have been delving
you mustn't have been delving
they mustn't have been delving	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I delve?
must you delve?
must he delve?
must we delve?
must you delve?
must they delve? 	must I be delving?
must you be delving?
must he be delving?
must we be delving?
must you be delving?
must they be delving? 	must I have delved?
must you have delved?
must he have delved?
must we have delved?
must you have delved?
must they have delved? 	must I have been delving?
must you have been delving?
must he have been delving?
must we have been delving?
must you have been delving?
must they have been delving? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I delve?
mustn't you delve?
mustn't he delve?
mustn't we delve?
mustn't you delve?
mustn't they delve? 	mustn't I be delving?
mustn't you be delving?
mustn't he be delving?
mustn't we be delving?
mustn't you be delving?
mustn't they be delving? 	mustn't I have delved?
mustn't you have delved?
mustn't he have delved?
mustn't we have delved?
mustn't you have delved?
mustn't they have delved? 	mustn't I have been delving?
mustn't you have been delving?
mustn't he have been delving?
mustn't we have been delving?
mustn't you have been delving?
mustn't they have been delving?