What are some codes for boostmobile to get free air time or free cherp?

Da code 4 free cherp is Pound(#), Star(*), Menu Button(looks like a mini book), Then The Right Arrow(%26gt;). But U Gotta Do Dis Qickly. If U Find Da Free Minute,Intenet,Etc., Hitme Up At thatyoungkid0018@yahoo.com