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