I can tackle you can tackle she can tackle we can tackle you can tackle they can tackle
V-ing form
I can be tackling you can be tackling she can be tackling we can be tackling you can be tackling they can be tackling
Perfect
I can have tackled you can have tackled she can have tackled we can have tackled you can have tackled they can have tackled
V-ing perfect
I can have been tackling you can have been tackling she can have been tackling we can have been tackling you can have been tackling they can have been tackling
Negation
Simple form
I cannot tackle you cannot tackle she cannot tackle we cannot tackle you cannot tackle they cannot tackle
V-ing form
I cannot be tackling you cannot be tackling she cannot be tackling we cannot be tackling you cannot be tackling they cannot be tackling
Perfect
I cannot have tackled you cannot have tackled she cannot have tackled we cannot have tackled you cannot have tackled they cannot have tackled
V-ing perfect
I cannot have been tackling you cannot have been tackling she cannot have been tackling we cannot have been tackling you cannot have been tackling they cannot have been tackling
Interrogative form
Simple form
can I tackle? can you tackle? can she tackle? can we tackle? can you tackle? can they tackle?
V-ing form
can I be tackling? can you be tackling? can she be tackling? can we be tackling? can you be tackling? can they be tackling?
Perfect
can I have tackled? can you have tackled? can she have tackled? can we have tackled? can you have tackled? can they have tackled?
V-ing perfect
can I have been tackling? can you have been tackling? can she have been tackling? can we have been tackling? can you have been tackling? can they have been tackling?
Interro-negative form
Simple form
can I not tackle? can you not tackle? can she not tackle? can we not tackle? can you not tackle? can they not tackle?
V-ing form
can I not be tackling? can you not be tackling? can she not be tackling? can we not be tackling? can you not be tackling? can they not be tackling?
Perfect
can I not have tackled? can you not have tackled? can she not have tackled? can we not have tackled? can you not have tackled? can they not have tackled?
V-ing perfect
can I not have been tackling? can you not have been tackling? can she not have been tackling? can we not have been tackling? can you not have been tackling? can they not have been tackling?