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