Acme::Buffy 

use Acme::Buffy;
BUffY bUFFY BUffY bUFFY bUfFy buffy BUFfy    
buFFY BufFy     BufFY   bUFfy BuFFY buffy       
bufFy bUffy bUffY BuFfy BuffY   bUFfy BUfFY BUFFy       
Buffy bUffY  BuFFY BUFFy   BufFy BUFfy BUfFY
buFfy BuffY   BuFfy   BUfFY bUffy     buFFy   
BUffy   bUffy