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