I can beat you can beat she can beat we can beat you can beat they can beat
V-ing form
I can be beating you can be beating she can be beating we can be beating you can be beating they can be beating
Perfect
I can have beaten, beat you can have beaten, beat she can have beaten, beat we can have beaten, beat you can have beaten, beat they can have beaten, beat
V-ing perfect
I can have been beating you can have been beating she can have been beating we can have been beating you can have been beating they can have been beating
Negation
Simple form
I cannot beat you cannot beat she cannot beat we cannot beat you cannot beat they cannot beat
V-ing form
I cannot be beating you cannot be beating she cannot be beating we cannot be beating you cannot be beating they cannot be beating
Perfect
I cannot have beaten, beat you cannot have beaten, beat she cannot have beaten, beat we cannot have beaten, beat you cannot have beaten, beat they cannot have beaten, beat
V-ing perfect
I cannot have been beating you cannot have been beating she cannot have been beating we cannot have been beating you cannot have been beating they cannot have been beating
Interrogative form
Simple form
can I beat? can you beat? can she beat? can we beat? can you beat? can they beat?
V-ing form
can I be beating? can you be beating? can she be beating? can we be beating? can you be beating? can they be beating?
Perfect
can I have beaten, beat? can you have beaten, beat? can she have beaten, beat? can we have beaten, beat? can you have beaten, beat? can they have beaten, beat?
V-ing perfect
can I have been beating? can you have been beating? can she have been beating? can we have been beating? can you have been beating? can they have been beating?
Interro-negative form
Simple form
can I not beat? can you not beat? can she not beat? can we not beat? can you not beat? can they not beat?
V-ing form
can I not be beating? can you not be beating? can she not be beating? can we not be beating? can you not be beating? can they not be beating?
Perfect
can I not have beaten, beat? can you not have beaten, beat? can she not have beaten, beat? can we not have beaten, beat? can you not have beaten, beat? can they not have beaten, beat?
V-ing perfect
can I not have been beating? can you not have been beating? can she not have been beating? can we not have been beating? can you not have been beating? can they not have been beating?