E = Empty Set

E = {(a,b), (b,c), (c,d), (d,e), (a,h), (b,h), (c,i), (d,f), (c,j), ........ }


w(E) = |  W   |  e  |
       |  1   |(h,g)|
       |  2   |(c,i)|
       |  2   |(g,f)|
       |  4   |(a,b)|
       |  4   |(c,f)|
       |  6   |(i,g)|
       |  7   |(c,d)|
       |  7   |(h,i)|
       |  8   |(a,h)|
       |  8   |(b,c)|
       |  9   |(d,e)|
       |  10  |(e,f)|
       |  11  |(b,h)|
       |  14  |(d,f)|


   A      | Sets | W
---------------------------------------------------------------------------------
   E      | {a}, {b}, {c}, {d}, {e}, {f}, [ {g} ], [ {h} ], {i} 	(a)
---------------------------------------------------------------------------------
 {(h,g)}  | {a}, {b}, [ {c} ], {d}, {e}, {f}, {g,h}, [ {i} ]            (b)
---------------------------------------------------------------------------------
 {(h,g),  | {a}, {b}, {c,i}, {d}, {e}, [ {f} ], {g,h}                   (c)
  (c,i)}  |
---------------------------------------------------------------------------------
 {(h,g),  | [ {a} ], [ {b} ], {c,i}, {d}, {e}, {g,h,f}                  (d)
  (c,i),  |
  (g,f)}  |
---------------------------------------------------------------------------------
 {(g,h,f),| {a,b}, [ {c,i} ], {d}, {e}, [ {g,h,f} ]                     (e)
  (c,i)}  |
---------------------------------------------------------------------------------
 {(a,b),  | {a,b}, {d}, {e}, [ {g,h,f,c,i} ]                            (f)
  (g,h,f),|
  (c,i)}  |
---------------------------------------------------------------------------------
 {(a,b),  | {a,b}, [ {d} ],  {e}, [ {g,h,f,c,i} ]                       (g)
  (g,h,f, |
   c,i)}  |
---------------------------------------------------------------------------------
 {(a,b),  | {a,b}, {e}, [ {g,h,f,c,i,d} ]                               (h)
  (g,h,f, |
   c,i,d  |
  )}      |
---------------------------------------------------------------------------------
 {(a,b),  | [ {a,b} ], {e}, [ {g,h,f,c,i,d} ]                           (i)
  (g,h,f, |
   c,i,d  |
  )}      |
---------------------------------------------------------------------------------
 {(g,h,f, | [ {g,h,f,c,i,d,a,b} ], {e}                                  (j)
   c,i,d, |
   a,b)}  |
---------------------------------------------------------------------------------
 {(g,h,f, | [ {g,h,f,c,i,d,a,b} ], [ {e} ]                              (k)
   c,i,d, |
   a,b)}  |
---------------------------------------------------------------------------------
 {(g,h,f, | [ {g,h,f,c,i,d,a,b,e} ]                                     (l)
   c,i,d, |
   a,b,e) |
 }        |
---------------------------------------------------------------------------------
 {(g,h,f, | [ {g,h,f,c,i,d,a,b,e} ]                                     (m)
   c,i,d, |
   a,b,e) |
 }        |
---------------------------------------------------------------------------------
 {(g,h,f, | [ {g,h,f,c,i,d,a,b,e} ]                                     (n)
   c,i,d, |
   a,b,e) |
 }        |
---------------------------------------------------------------------------------