diff --git a/src/ch03/Reader.ts b/src/ch03/Reader.ts
index e38e51a..867207e 100644
--- a/src/ch03/Reader.ts
+++ b/src/ch03/Reader.ts
@@ -2,9 +2,11 @@ class Reader {
   private data: string[];
 
   private current: number;
+  nextLine() {
+    this.current++;
+  }
 
   readLine() {
-    this.current++;
     return this.data[this.current] || null;
   }
 }
@@ -13,7 +15,8 @@ const run = () => {
   const br = new Reader();
   let line: string | null;
 
-  while ((line = br.readLine()) !== null) {
-    return line;
+  for (; br.readLine() !== null; br.nextLine()) {
+    let line = br.readLine();
+    console.log(line);
   }
 };