I may backsolve you may backsolve he may backsolve we may backsolve you may backsolve they may backsolve
V-ing form
I may be backsolving you may be backsolving he may be backsolving we may be backsolving you may be backsolving they may be backsolving
Perfect
I may have backsolved you may have backsolved he may have backsolved we may have backsolved you may have backsolved they may have backsolved
V-ing perfect
I may have been backsolving you may have been backsolving he may have been backsolving we may have been backsolving you may have been backsolving they may have been backsolving
Negation
Simple form
I mayn't backsolve you mayn't backsolve he mayn't backsolve we mayn't backsolve you mayn't backsolve they mayn't backsolve
V-ing form
I mayn't be backsolving you mayn't be backsolving he mayn't be backsolving we mayn't be backsolving you mayn't be backsolving they mayn't be backsolving
Perfect
I mayn't have backsolved you mayn't have backsolved he mayn't have backsolved we mayn't have backsolved you mayn't have backsolved they mayn't have backsolved
V-ing perfect
I mayn't have been backsolving you mayn't have been backsolving he mayn't have been backsolving we mayn't have been backsolving you mayn't have been backsolving they mayn't have been backsolving
Interrogative form
Simple form
may I backsolve? may you backsolve? may he backsolve? may we backsolve? may you backsolve? may they backsolve?
V-ing form
may I be backsolving? may you be backsolving? may he be backsolving? may we be backsolving? may you be backsolving? may they be backsolving?
Perfect
may I have backsolved? may you have backsolved? may he have backsolved? may we have backsolved? may you have backsolved? may they have backsolved?
V-ing perfect
may I have been backsolving? may you have been backsolving? may he have been backsolving? may we have been backsolving? may you have been backsolving? may they have been backsolving?
Interro-negative form
Simple form
mayn't I backsolve? mayn't you backsolve? mayn't he backsolve? mayn't we backsolve? mayn't you backsolve? mayn't they backsolve?
V-ing form
mayn't I be backsolving? mayn't you be backsolving? mayn't he be backsolving? mayn't we be backsolving? mayn't you be backsolving? mayn't they be backsolving?
Perfect
mayn't I have backsolved? mayn't you have backsolved? mayn't he have backsolved? mayn't we have backsolved? mayn't you have backsolved? mayn't they have backsolved?
V-ing perfect
mayn't I have been backsolving? mayn't you have been backsolving? mayn't he have been backsolving? mayn't we have been backsolving? mayn't you have been backsolving? mayn't they have been backsolving?