can best
Regular verb: best - bested- bested

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can best
you can best
he can best
we can best
you can best
they can best 	I can be besting
you can be besting
he can be besting
we can be besting
you can be besting
they can be besting	I can have bested
you can have bested
he can have bested
we can have bested
you can have bested
they can have bested	I can have been besting
you can have been besting
he can have been besting
we can have been besting
you can have been besting
they can have been besting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't best
you can't best
he can't best
we can't best
you can't best
they can't best 	I can't be besting
you can't be besting
he can't be besting
we can't be besting
you can't be besting
they can't be besting	I can't have bested
you can't have bested
he can't have bested
we can't have bested
you can't have bested
they can't have bested	I can't have been besting
you can't have been besting
he can't have been besting
we can't have been besting
you can't have been besting
they can't have been besting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I best?
can you best?
can he best?
can we best?
can you best?
can they best? 	can I be besting?
can you be besting?
can he be besting?
can we be besting?
can you be besting?
can they be besting? 	can I have bested?
can you have bested?
can he have bested?
can we have bested?
can you have bested?
can they have bested? 	can I have been besting?
can you have been besting?
can he have been besting?
can we have been besting?
can you have been besting?
can they have been besting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I best?
can't you best?
can't he best?
can't we best?
can't you best?
can't they best? 	can't I be besting?
can't you be besting?
can't he be besting?
can't we be besting?
can't you be besting?
can't they be besting? 	can't I have bested?
can't you have bested?
can't he have bested?
can't we have bested?
can't you have bested?
can't they have bested? 	can't I have been besting?
can't you have been besting?
can't he have been besting?
can't we have been besting?
can't you have been besting?
can't they have been besting?