1. {a}, {b}, {c}, {a,b}, {a,c}, {b,c}, {a,b,c}, { } - 8
2. {2}, {4}, {6}, {8}, {2,4}, {2,6}, {2,8}, {4,6}, {4,8}, {6,8}, {2,4,6}, {2,4,8}, {2,6,8}, {4,6,8}, {2,4,6,8}, { } - 16
3. {1}, {2}, {3}, {4}, {5}, {1,2}, {1,3}, {1,4}, {1,5}, {2,3}, {2,4}, {2,5}, {3,4}, {3,5}, {4,5}, {1,2,3}, {1,2,4}, {1,2,5}, {1,3,4}, {1,3,5}, {1,4,5}, {2,3,4}, {2,3,5}, {3,4,5} {1,2,3,4}, {1,2,3,5}, {1,2,4,5}, {1,3,4,5}, {2,3,4,5}, {1,2,3,4,5}, { } - 32
4. {d}, {e}, {f}, {g}, {h}, {i}, {d,e}, {d,f}, {d,g}, {d,h}, {d,i}, {e,f}, {e,g}, {e,h}, {e,i}, {f,g}, {f,h}, {f,i}, {g,h}, {g,i}, {h,i}, {d,e,f}, {d,e,g}, {d,e,h}, {d,e,i}, {d,f,g}, {d,f,h}, {d,f,i}, {d,g,h}, {d,g,i}, {d,h,i}, {e,f,g}, {e,f,h}, {e,f,i}, {e,g,h}, {e,g,i}, {e,h,i{, {f,g,h}, {f,g,i}, {f,h,i}, {g,h,i}, {d,e,f,g}, {d,e,f,h}, {d,e,f,i}, {d,e,g,h}, {d,e,g,i}, {d,e,h,i}, {d,f,g,h}, {d,f,g,i}, {d,f,h,i}, {d,g,h,i}, {e,f,g,h}, {e,f,g,i}, {e,f,h,i}, {e,g,h,i}, {f,g,h,i}, {d,e,f,g,h}, {d,e,f,g,i},{d,e,f,h,i}, {d,e,g,h,i}, {d,f,g,h,i}, {e,f,g,h,i}, {d,e,f,g,h,i}, { } - 64
