diff --git a/lib/golf.rb b/lib/golf.rb
index ad9c4a5..386516b 100644
--- a/lib/golf.rb
+++ b/lib/golf.rb
@@ -12,15 +12,10 @@ class << self
         s="#{s}buzz" if i%5==0
         s || i 
       }',
-    'c = nil
+    'i = -1
     m = []
-    a.map { |i|
-      i-1 != c ? m << [i] : m[-1] << i
-      c = i
-    }
-    m.map { |i|
-      i.size > 1 ? "#{i[0]}-#{i[-1]}" : i[0].to_s
-    }',
+    a.map{ |j| a[i] + 1 != a[i += 1] ? m << [j] : (m[-1] << j if a[i] + 1 != a[i + 1]) }
+    m.map{ |i| i * "-" }',
     'b = [1,1]
       (2..a-1).map {|i| b << b[-2] + b[-1] }
       b',