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