diff --git a/12/12.go b/12/12.go
index f6c93c5..8cf3d06 100644
--- a/12/12.go
+++ b/12/12.go
@@ -4,14 +4,14 @@ import (
 	"bufio"
 	"fmt"
 	"os"
-	"strings"
 	"strconv"
+	"strings"
 )
 
 // cat input | go run 12.go
 
 type pipedata struct {
-	pipe int
+	pipe     int
 	linkedTo []int
 }
 
@@ -24,7 +24,7 @@ func main() {
 	for scanner.Scan() {
 
 		s := strings.Split(scanner.Text(), " <-> ")
-		pipe,_ := strconv.Atoi(s[0])
+		pipe, _ := strconv.Atoi(s[0])
 
 		var linkedTo = []int{}
 		l := strings.Split(s[1], ", ")
@@ -38,17 +38,16 @@ func main() {
 
 	cp := CountPipes(pd)
 	seenGroups := make(map[int]int)
-	groups,_ := CountGroups(seenGroups, pd)
+	groups, _ := CountGroups(seenGroups, pd)
 
-	fmt.Println(cp,groups)
+	fmt.Println(cp, groups)
 }
 
-
 func CountPipes(pipedata []pipedata) int {
 	seen := make(map[int]int)
 	seen = getChildren(seen, pipedata, 0)
 	fmt.Println(seen)
-	
+
 	count := 0
 	for range seen {
 		count++
@@ -58,17 +57,17 @@ func CountPipes(pipedata []pipedata) int {
 
 }
 
-func CountGroups(seen map[int]int, pipedata []pipedata) (int,map[int]int) {
+func CountGroups(seen map[int]int, pipedata []pipedata) (int, map[int]int) {
 	count := 0
 	for i := range pipedata {
 		if seen[i] > 0 {
 			continue
 		} else {
 			seen = getChildren(seen, pipedata, i)
-			count++ 
+			count++
 		}
 	}
-	return count,seen
+	return count, seen
 }
 
 func getChildren(seen map[int]int, pipedata []pipedata, pipe int) map[int]int {
@@ -76,11 +75,11 @@ func getChildren(seen map[int]int, pipedata []pipedata, pipe int) map[int]int {
 	p := pipedata[pipe]
 	for l := range p.linkedTo {
 		child := p.linkedTo[l]
-		if (seen[child] == 0) {
+		if seen[child] == 0 {
 			seen[child]++
 			seen = getChildren(seen, pipedata, child)
-		} 
+		}
 	}
 
 	return seen
-}
\ No newline at end of file
+}
diff --git a/12/12_test.go b/12/12_test.go
index 33c6e18..8bf2800 100644
--- a/12/12_test.go
+++ b/12/12_test.go
@@ -25,10 +25,9 @@ func TestCountPipes(t *testing.T) {
 	}
 }
 
-
 func TestCountGroups(t *testing.T) {
 	seen := make(map[int]int)
-	v,_ := CountGroups(seen, tests)
+	v, _ := CountGroups(seen, tests)
 	if v != 2 {
 		t.Error(
 			"For", tests,
@@ -36,4 +35,4 @@ func TestCountGroups(t *testing.T) {
 			"got", v,
 		)
 	}
-}
\ No newline at end of file
+}