diff --git a/09dec/main.go b/09dec/main.go
new file mode 100644
index 0000000..06c4dfb
--- /dev/null
+++ b/09dec/main.go
@@ -0,0 +1,68 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+)
+
+const (
+	GROUP = iota
+	GARB
+	IGN
+)
+
+var (
+	state int
+	group int
+	score int
+)
+
+func main() {
+	state = GROUP
+	sc := bufio.NewScanner(os.Stdin)
+	sc.Split(bufio.ScanRunes)
+	for sc.Scan() {
+		parse(sc.Text())
+	}
+	fmt.Println("SCORE:", score)
+}
+
+func parse(c string) {
+	fmt.Println(c)
+	if state == IGN {
+		state = GARB
+	} else {
+		switch c {
+		case ",":
+			if state == GROUP {
+				fmt.Println("sep group")
+				//score += group
+			}
+		case "{":
+			if state == GROUP {
+				fmt.Println("start group")
+				group++
+			}
+		case "}":
+			if state == GROUP {
+				fmt.Println("end group")
+				score += group
+				group--
+			}
+		case "<":
+			if state == GROUP {
+				state = GARB
+			}
+		case ">":
+			if state == GARB {
+				state = GROUP
+			}
+		case "!":
+			if state == GARB {
+				state = IGN
+			}
+		}
+	}
+	fmt.Println(state, group, score)
+}