@length: [1, 8, 21, 20] at /tmp/compress.pl line 36.
average #characters: group/line[1.5624, 14.0616] at /tmp/compress.pl line 37.
# possible combinations: 50 at /tmp/compress.pl line 44.
Upper bound bits, bytes[50.7947057079725, 6.34933821349656] at /tmp/compress.pl line 48.
probabilities: {
  ""    => 592,
  "2"   => 74,
  "24"  => 60,
  "246" => 24,
  "247" => 24,
  "248" => 24,
  "249" => 24,
  "25"  => 84,
  "257" => 24,
  "258" => 24,
  "259" => 24,
  "26"  => 84,
  "268" => 24,
  "269" => 24,
  "27"  => 84,
  "279" => 24,
  "28"  => 84,
  "29"  => 60,
  "3"   => 208,
  "35"  => 144,
  "357" => 48,
  "358" => 48,
  "359" => 48,
  "36"  => 192,
  "368" => 48,
  "369" => 48,
  "37"  => 192,
  "379" => 48,
  "38"  => 192,
  "39"  => 144,
  "4"   => 366,
  "46"  => 228,
  "468" => 72,
  "469" => 72,
  "47"  => 300,
  "479" => 72,
  "48"  => 300,
  "49"  => 228,
  "5"   => 524,
  "57"  => 312,
  "579" => 96,
  "58"  => 408,
  "59"  => 312,
  "6"   => 682,
  "68"  => 396,
  "69"  => 396,
  "7"   => 840,
  "79"  => 336,
  "8"   => 830,
  "9"   => 508,
} at /tmp/compress.pl line 52.