diff --git a/main.go b/main.go
index 20224c5..3360d51 100644
--- a/main.go
+++ b/main.go
@@ -8,8 +8,6 @@ import (
 	"os"
 	"strings"
 	"time"
-
-	"gopkg.in/yaml.v2"
 )
 
 type (
@@ -54,6 +52,17 @@ func Main() error {
 	}
 	defer db.Close()
 	user := IDU(os.Getenv("USER"))
+	failed, err := Review(db, user)
+	if err != nil {
+		return err
+	}
+	log.Printf("failed %v", failed)
+	return nil
+}
+
+func Review(db DB, user IDU) ([]IDQ, error) {
+	failed := []IDQ{}
+
 	for q, _ := range db.HistoryOf(user) {
 		if time.Until(db.Next(user, q)) > 0 {
 			continue
@@ -85,23 +94,22 @@ func Main() error {
 			fmt.Printf("> Last time, you responded:\n\t%s\n", lastAnswer.A)
 		}
 		fmt.Printf("> Did you pass this time? [Yns]\n")
-		switch readline() {
+		passed := readline()
+		switch passed {
 		case "s":
 		case "n":
+			failed = append(failed, q)
 			if err := db.PushAnswer(user, q, Renderable(response), false); err != nil {
-				return err
+				return nil, err
 			}
 		default:
 			if err := db.PushAnswer(user, q, Renderable(response), true); err != nil {
-				return err
+				return nil, err
 			}
 		}
 		fmt.Println()
 	}
-	if b, _ := yaml.Marshal(db); len(b) > 0 {
-		log.Printf("%s\n", b)
-	}
-	return nil
+	return failed, nil
 }
 
 func readline() string {