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