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