I can bushwack you can bushwack she can bushwack we can bushwack you can bushwack they can bushwack
V-ing form
I can be bushwacking you can be bushwacking she can be bushwacking we can be bushwacking you can be bushwacking they can be bushwacking
Perfect
I can have bushwacked you can have bushwacked she can have bushwacked we can have bushwacked you can have bushwacked they can have bushwacked
V-ing perfect
I can have been bushwacking you can have been bushwacking she can have been bushwacking we can have been bushwacking you can have been bushwacking they can have been bushwacking
Negation
Simple form
I cannot bushwack you cannot bushwack she cannot bushwack we cannot bushwack you cannot bushwack they cannot bushwack
V-ing form
I cannot be bushwacking you cannot be bushwacking she cannot be bushwacking we cannot be bushwacking you cannot be bushwacking they cannot be bushwacking
Perfect
I cannot have bushwacked you cannot have bushwacked she cannot have bushwacked we cannot have bushwacked you cannot have bushwacked they cannot have bushwacked
V-ing perfect
I cannot have been bushwacking you cannot have been bushwacking she cannot have been bushwacking we cannot have been bushwacking you cannot have been bushwacking they cannot have been bushwacking
Interrogative form
Simple form
can I bushwack? can you bushwack? can she bushwack? can we bushwack? can you bushwack? can they bushwack?
V-ing form
can I be bushwacking? can you be bushwacking? can she be bushwacking? can we be bushwacking? can you be bushwacking? can they be bushwacking?
Perfect
can I have bushwacked? can you have bushwacked? can she have bushwacked? can we have bushwacked? can you have bushwacked? can they have bushwacked?
V-ing perfect
can I have been bushwacking? can you have been bushwacking? can she have been bushwacking? can we have been bushwacking? can you have been bushwacking? can they have been bushwacking?
Interro-negative form
Simple form
can I not bushwack? can you not bushwack? can she not bushwack? can we not bushwack? can you not bushwack? can they not bushwack?
V-ing form
can I not be bushwacking? can you not be bushwacking? can she not be bushwacking? can we not be bushwacking? can you not be bushwacking? can they not be bushwacking?
Perfect
can I not have bushwacked? can you not have bushwacked? can she not have bushwacked? can we not have bushwacked? can you not have bushwacked? can they not have bushwacked?
V-ing perfect
can I not have been bushwacking? can you not have been bushwacking? can she not have been bushwacking? can we not have been bushwacking? can you not have been bushwacking? can they not have been bushwacking?