I must devolve you must devolve she must devolve we must devolve you must devolve they must devolve
V-ing form
I must be devolving you must be devolving she must be devolving we must be devolving you must be devolving they must be devolving
Perfect
I must have devolved you must have devolved she must have devolved we must have devolved you must have devolved they must have devolved
V-ing perfect
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
I must not devolve you must not devolve she must not devolve we must not devolve you must not devolve they must not devolve
V-ing form
I must not be devolving you must not be devolving she must not be devolving we must not be devolving you must not be devolving they must not be devolving
Perfect
I must not have devolved you must not have devolved she must not have devolved we must not have devolved you must not have devolved they must not have devolved
V-ing perfect
I must not have been devolving you must not have been devolving she must not have been devolving we must not have been devolving you must not have been devolving they must not have been devolving
Interrogative form
Simple form
must I devolve? must you devolve? must she devolve? must we devolve? must you devolve? must they devolve?
V-ing form
must I be devolving? must you be devolving? must she be devolving? must we be devolving? must you be devolving? must they be devolving?
Perfect
must I have devolved? must you have devolved? must she have devolved? must we have devolved? must you have devolved? must they have devolved?
V-ing perfect
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
must I not devolve? must you not devolve? must she not devolve? must we not devolve? must you not devolve? must they not devolve?
V-ing form
must I not be devolving? must you not be devolving? must she not be devolving? must we not be devolving? must you not be devolving? must they not be devolving?
Perfect
must I not have devolved? must you not have devolved? must she not have devolved? must we not have devolved? must you not have devolved? must they not have devolved?
V-ing perfect
must I not have been devolving? must you not have been devolving? must she not have been devolving? must we not have been devolving? must you not have been devolving? must they not have been devolving?