tolong jwb sma cara nya juga

1. Himpunan dari Sukarelawan={s,u,k,a,r,e,l,a,w,a,n,su,sk,sa,sr,se,sa,sw,sa,sn,suk,suka,sur,sue,sue,sul,sua,suw,suasun,sukr,suke,sukl,suka,sukw,suka,sukn,sukar,sukae,sukal,sukaa,sukaw,sukaa,sukan,sukare,sukarel,sukarea,sukarw,sukara,sukaran,sukare,sukarl,sukarel,sukarela,sukarelaw,sukarelawa,sukarelawan}


semoga memvantu