[질문] {a,b,c,d,e} 이집합의 모든 부분집합 하나하나알려주세요

a,b/a,c/a,d/a,e/b,c/b,d/b,e/c,d/c,e/d,ea,b,c/a,b,d/a,b,e/a,c,d/a,c,e/a,d,e/b,c,d/b,c,e/b,d,e/c,d,e/a,b,c,d/a,b,c,e/a,c,d,e/b,c,d,e,/자신,공,원소1개씩