auszeichnen [2,3,6,2,(-1),2,5,3] == [6,(-1),5]
auszeichnen [2,2,2] == []

perfekt 6 60 == [6,28]
perfekt 6 1  == [0]

istAntisym [(2,4),(1,5),(3,3),(4,2),(5,1)] == False
istAntisym [(2,4),(3,3),(5,1)] == True

pm [1,2,3] == [[],[1],[2],[3],[1,2],[2,3],[1,3],[1,2,3]]
pm [1,2,3,1] == [[],[]]