t/t4110/expect

   1 a1
   2 a11
   3 a111
   4 a1111
   5 b1
   6 b11
   7 b111
   8 b1111
   9 b2
  10 b22
  11 b222
  12 b2222
  13 c1
  14 c11
  15 c111
  16 c1111
  17 c2
  18 c22
  19 c222
  20 c2222