diff --git a/lessons/how-to-use-transient-transitions/after.js b/lessons/how-to-use-transient-transitions/after.js
index 2b7195c..fc5430f 100644
--- a/lessons/how-to-use-transient-transitions/after.js
+++ b/lessons/how-to-use-transient-transitions/after.js
@@ -1 +1,33 @@
-// after.js
+const { assign, Machine } = require('xstate')
+
+const ifAtFirstYoudontSucceed = Machine(
+  {
+    id: 'tryTryAgain',
+    initial: 'idle',
+    context: {
+      tries: 0,
+    },
+    states: {
+      idle: {
+        on: { TRY: 'trying' },
+      },
+      trying: {
+        entry: ['incTries'],
+        on: {
+          '': [{ target: 'success', cond: 'triedEnough' }, { target: 'idle' }],
+        },
+      },
+      success: {},
+    },
+  },
+  {
+    actions: {
+      incTries: assign({
+        tries: ctx => ctx.tries + 1,
+      }),
+    },
+    guards: {
+      triedEnough: ctx => ctx.tries > 2,
+    },
+  }
+)
diff --git a/lessons/how-to-use-transient-transitions/before.js b/lessons/how-to-use-transient-transitions/before.js
index 11587d9..ed8faf8 100644
--- a/lessons/how-to-use-transient-transitions/before.js
+++ b/lessons/how-to-use-transient-transitions/before.js
@@ -1 +1,27 @@
-// before.js
+const { assign, Machine } = require('xstate')
+
+const ifAtFirstYoudontSucceed = Machine(
+  {
+    id: 'tryTryAgain',
+    initial: 'idle',
+    context: {
+      tries: 0,
+    },
+    states: {
+      idle: {
+        on: { TRY: 'trying' },
+      },
+      trying: {
+        entry: ['incTries'],
+      },
+      success: {},
+    },
+  },
+  {
+    actions: {
+      incTries: assign({
+        tries: ctx => ctx.tries + 1,
+      }),
+    },
+  }
+)