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blob - ba8a06acb2e5c52ab62807786b27f071eb5c3ecf
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--- README.md
+++ README.md
@@ -11,3 +11,212 @@ used together, and it can avoid those feature combinat
 [Learn
 more](https://csrc.nist.gov/Projects/Automated-Combinatorial-Testing-for-Software)
 about combinatorial testing.
+
+#### Example
+
+Let's imagine we have a program with three features and various values for each feature:
+
+- Sex: ♀️, ♂️
+- Weather: 🌧, ⛈, 🌩, ☀️, 🌤, 🌥
+- Mood: 😃, 😉, 😋, 😎, 🤐, 🤒, 😠, 😦, 😧, 😨, 😴, 😌
+
+
+Jenny can generate combinations:
+
+```
+$ ./jenny -n3 2 6 12
+ 1a 2d 3j 
+ 1b 2e 3i 
+ 1a 2a 3e 
+ ...
+ 
+ 1a 2f 3i 
+ 1b 2a 3c 
+```
+where 3 is a number of features in combination, 2, 6 and 12 are numbers of possible values for the appropriate feature. Total number of possible combinations is 144.
+
+
+```
+$ cat jenny.sed
+# number the testcases
+=
+
+
+# Dimension 1
+s/ 1a / ♀️ /g
+s/ 1b / ♂️ /g
+
+# Dimension 2
+s/ 2a / 🌧 /g
+s/ 2b / ⛈ /g
+s/ 2c / 🌩 /g
+s/ 2d / ☀️ /g
+s/ 2e / 🌤 /g
+s/ 2f / 🌥 /g
+
+# Dimension 3
+s/ 3a / 😃 /g
+s/ 3b / 😉 /g
+s/ 3c / 😋 /g
+s/ 3d / 😎 /g
+s/ 3e / 🤐 /g
+s/ 3f / 🤒 /g
+s/ 3g / 😠 /g
+s/ 3h / 😦 /g
+s/ 3i / 😧 /g
+s/ 3j / 😨 /g
+s/ 3k / 😴 /g
+s/ 3l / 😌 /g
+```
+
+```
+$ sed -f jenny.sed output.txt
+```
+
+
+```
+  ♀️ ☀️ 😨 
+ ♂️ 🌤 😧 
+ ♀️ 🌧 🤐 
+ ♀️ ⛈ 😃 
+ ♀️ 🌩 😎 
+ ♂️ 🌥 😌 
+ ♂️ ⛈ 😉 
+ ♀️ 🌤 😋 
+ ♂️ 🌩 🤒 
+ ♀️ 🌥 😠 
+ ♀️ 🌩 😦 
+ ♀️ 🌤 😴 
+ ♂️ 🌧 😦 
+ ♂️ ☀️ 😴 
+ ♀️ 🌧 😌 
+ ♀️ ⛈ 😌 
+ ♂️ ☀️ 😌 
+ ♀️ 🌥 😴 
+ ♂️ 🌧 😨 
+ ♂️ ⛈ 😨 
+ ♀️ 🌩 😌 
+ ♀️ ☀️ 😧 
+ ♀️ 🌤 😌 
+ ♂️ 🌥 😧 
+ ♂️ 🌧 😧 
+ ♀️ ⛈ 😧 
+ ♀️ 🌩 😧 
+ ♂️ ☀️ 😦 
+ ♂️ 🌤 😦 
+ ♂️ 🌥 😦 
+ ♀️ 🌧 😴 
+ ♀️ ⛈ 😦 
+ ♂️ 🌩 😨 
+ ♂️ ☀️ 😠 
+ ♀️ 🌤 😠 
+ ♀️ 🌥 😨 
+ ♀️ 🌧 😠 
+ ♂️ ⛈ 😠 
+ ♂️ 🌩 😠 
+ ♀️ ☀️ 🤒 
+ ♂️ 🌤 🤒 
+ ♀️ 🌥 🤒 
+ ♂️ 🌧 😃 
+ ♀️ 🌧 😉 
+ ♂️ ⛈ 😋 
+ ♂️ ⛈ 😎 
+ ♂️ 🌩 🤐 
+ ♀️ ☀️ 🤐 
+ ♀️ 🌤 🤐 
+ ♀️ 🌥 🤐 
+ ♀️ 🌩 😴 
+ ♂️ ☀️ 😎 
+ ♂️ 🌤 😎 
+ ♀️ 🌥 😎 
+ ♀️ 🌥 😃 
+ ♀️ 🌥 😉 
+ ♀️ 🌥 😋 
+ ♀️ 🌧 🤒 
+ ♀️ ⛈ 🤒 
+ ♂️ 🌩 😋 
+ ♂️ ☀️ 😋 
+ ♀️ 🌤 😨 
+ ♂️ ☀️ 😃 
+ ♀️ ☀️ 😉 
+ ♀️ 🌧 😋 
+ ♀️ ⛈ 🤐 
+ ♂️ 🌩 😉 
+ ♂️ 🌤 😉 
+ ♂️ 🌩 😃 
+ ♀️ 🌧 😎 
+ ♀️ ⛈ 😴 
+ ♂️ 🌤 😃 
+ ♂️ 🌧 😉 
+ ♂️ 🌤 😌 
+ ♂️ 🌤 😴 
+ ♂️ 🌤 😨 
+ ♂️ 🌤 😠 
+ ♂️ 🌤 🤐 
+ ♂️ 🌥 😨 
+ ♂️ 🌤 😋 
+ ♀️ 🌧 😃 
+ ♂️ 🌥 😋 
+ ♀️ ☀️ 😌 
+ ♂️ 🌥 😃 
+ ♀️ ☀️ 😴 
+ ♂️ ☀️ 😨 
+ ♀️ ☀️ 😦 
+ ♂️ ☀️ 😧 
+ ♀️ ☀️ 😠 
+ ♂️ ☀️ 🤒 
+ ♀️ 🌥 😌 
+ ♂️ ☀️ 🤐 
+ ♀️ ☀️ 😎 
+ ♂️ 🌥 😴 
+ ♀️ ☀️ 😋 
+ ♂️ 🌥 🤒 
+ ♀️ 🌤 🤒 
+ ♂️ ☀️ 😉 
+ ♀️ ☀️ 😃 
+ ♂️ 🌥 🤐 
+ ♀️ 🌥 😦 
+ ♂️ 🌩 😌 
+ ♀️ 🌩 😨 
+ ♂️ 🌩 😴 
+ ♀️ 🌩 😠 
+ ♂️ 🌩 😧 
+ ♀️ 🌩 🤒 
+ ♂️ 🌩 😦 
+ ♀️ 🌩 🤐 
+ ♂️ 🌩 😎 
+ ♀️ 🌩 😋 
+ ♂️ 🌥 😠 
+ ♀️ 🌩 😉 
+ ♂️ 🌥 😎 
+ ♀️ 🌩 😃 
+ ♂️ 🌥 😉 
+ ♀️ 🌤 😃 
+ ♂️ ⛈ 😌 
+ ♀️ ⛈ 😨 
+ ♂️ ⛈ 😴 
+ ♀️ ⛈ 😠 
+ ♂️ ⛈ 😧 
+ ♀️ 🌤 😧 
+ ♂️ ⛈ 😦 
+ ♀️ 🌤 😎 
+ ♂️ ⛈ 🤒 
+ ♂️ 🌧 😴 
+ ♀️ ⛈ 😎 
+ ♂️ 🌧 😠 
+ ♀️ ⛈ 😋 
+ ♂️ 🌧 🤒 
+ ♀️ ⛈ 😉 
+ ♂️ 🌧 🤐 
+ ♀️ 🌧 😨 
+ ♀️ 🌧 😧 
+ ♂️ ⛈ 🤐 
+ ♀️ 🌧 😦 
+ ♂️ ⛈ 😃 
+ ♀️ 🌤 😦 
+ ♂️ 🌧 😌 
+ ♀️ 🌤 😉 
+ ♂️ 🌧 😎 
+ ♀️ 🌥 😧 
+ ♂️ 🌧 😋 
+```