must devolve
Regular verb: devolve - devolved- devolved

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must devolve
you must devolve
she must devolve
we must devolve
you must devolve
they must devolve 	I must be devolving
you must be devolving
she must be devolving
we must be devolving
you must be devolving
they must be devolving	I must have devolved
you must have devolved
she must have devolved
we must have devolved
you must have devolved
they must have devolved	I must have been devolving
you must have been devolving
she must have been devolving
we must have been devolving
you must have been devolving
they must have been devolving	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't devolve
you mustn't devolve
she mustn't devolve
we mustn't devolve
you mustn't devolve
they mustn't devolve 	I mustn't be devolving
you mustn't be devolving
she mustn't be devolving
we mustn't be devolving
you mustn't be devolving
they mustn't be devolving	I mustn't have devolved
you mustn't have devolved
she mustn't have devolved
we mustn't have devolved
you mustn't have devolved
they mustn't have devolved	I mustn't have been devolving
you mustn't have been devolving
she mustn't have been devolving
we mustn't have been devolving
you mustn't have been devolving
they mustn't have been devolving	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I devolve?
must you devolve?
must she devolve?
must we devolve?
must you devolve?
must they devolve? 	must I be devolving?
must you be devolving?
must she be devolving?
must we be devolving?
must you be devolving?
must they be devolving? 	must I have devolved?
must you have devolved?
must she have devolved?
must we have devolved?
must you have devolved?
must they have devolved? 	must I have been devolving?
must you have been devolving?
must she have been devolving?
must we have been devolving?
must you have been devolving?
must they have been devolving? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I devolve?
mustn't you devolve?
mustn't she devolve?
mustn't we devolve?
mustn't you devolve?
mustn't they devolve? 	mustn't I be devolving?
mustn't you be devolving?
mustn't she be devolving?
mustn't we be devolving?
mustn't you be devolving?
mustn't they be devolving? 	mustn't I have devolved?
mustn't you have devolved?
mustn't she have devolved?
mustn't we have devolved?
mustn't you have devolved?
mustn't they have devolved? 	mustn't I have been devolving?
mustn't you have been devolving?
mustn't she have been devolving?
mustn't we have been devolving?
mustn't you have been devolving?
mustn't they have been devolving?