Răspuns:
{1,2,3,4},{1,2,3,5},{1,2,3,7},{1,2,3,8},{1,2,4,5},{1,2,4,7},{1,2,4,8},{1,2,5,7},{1,2,5,8},{1,2,7,8},{1,3,4,5},{1,3,4,7},{1,3,4,8},{1,3,5,7},{1,3,5,8},{1,3,5,8},{1,3,7,8},{1,4,5,7},{1,4,5,8},{1,4,7,8},{1,5,7,8},{2,3,4,5},{2,3,4,7},{2,3,4,8},{2,3,5,7},{2,3,5,8},{2,3,7,8},{2,4,5,7},{2,4,5,8},{2,4,7,8},{2,5,7,8},{3,4,5,7},{3,4,7,8},{3,5,7,8},{4,5,7,8}