diff --git a/05/input-x b/05/input-x
new file mode 100644
index 0000000..d2379a1
--- /dev/null
+++ b/05/input-x
@@ -0,0 +1,6 @@
+mjqjpqmgbljsphdztnvjfqwrcgsmlb 7
+bvwbjplbgvbhsrlpgdmjqwftvncz: first marker after character 5
+nppdvjthqldpwncqszvftbrmjlhg: first marker after character 6
+nznrnfrfntjfmvfwmzdfjlvtqnbhcprsg: first marker after character 10
+zcfzfwzzqfrljwzlrfnpqdbhtmscgvjw: first marker after character 11
+
diff --git a/06/06-1.py b/06/06-1.py
new file mode 100644
index 0000000..a6fa3c1
--- /dev/null
+++ b/06/06-1.py
@@ -0,0 +1,31 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+data = ""
+
+# parse input
+input_file = open("input", "r")
+for line in input_file:
+    line = line.strip()
+    data += line
+input_file.close()
+
+# data = "mjqjpqmgbljsphdztnvjfqwrcgsmlb"
+# data = "bvwbjplbgvbhsrlpgdmjqwftvncz"
+# data = "nppdvjthqldpwncqszvftbrmjlhg"
+# data = "nznrnfrfntjfmvfwmzdfjlvtqnbhcprsg"
+# data = "zcfzfwzzqfrljwzlrfnpqdbhtmscgvjw"
+
+print(data)
+
+for i in range(len(data)-3):
+    sub = data[i:i+4]
+    if sub.count(sub[0]) > 1:
+        continue
+    elif sub.count(sub[1]) > 1:
+        continue
+    elif sub.count(sub[2]) > 1:
+        continue
+    else:
+        print(i+4)
+        break
diff --git a/06/06-2.py b/06/06-2.py
new file mode 100644
index 0000000..e5b612c
--- /dev/null
+++ b/06/06-2.py
@@ -0,0 +1,51 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+data = ""
+
+# parse input
+input_file = open("input", "r")
+for line in input_file:
+    line = line.strip()
+    data += line
+input_file.close()
+
+# data = "mjqjpqmgbljsphdztnvjfqwrcgsmlb"
+# data = "bvwbjplbgvbhsrlpgdmjqwftvncz"
+# data = "nppdvjthqldpwncqszvftbrmjlhg"
+# data = "nznrnfrfntjfmvfwmzdfjlvtqnbhcprsg"
+# data = "zcfzfwzzqfrljwzlrfnpqdbhtmscgvjw"
+
+print(data)
+
+for i in range(len(data)-13):
+    sub = data[i:i+14]
+    if sub.count(sub[0]) > 1:
+        continue
+    elif sub.count(sub[1]) > 1:
+        continue
+    elif sub.count(sub[2]) > 1:
+        continue
+    elif sub.count(sub[3]) > 1:
+        continue
+    elif sub.count(sub[4]) > 1:
+        continue
+    elif sub.count(sub[5]) > 1:
+        continue
+    elif sub.count(sub[6]) > 1:
+        continue
+    elif sub.count(sub[7]) > 1:
+        continue
+    elif sub.count(sub[8]) > 1:
+        continue
+    elif sub.count(sub[9]) > 1:
+        continue
+    elif sub.count(sub[10]) > 1:
+        continue
+    elif sub.count(sub[11]) > 1:
+        continue
+    elif sub.count(sub[12]) > 1:
+        continue
+    else:
+        print(i+14)
+        break
diff --git a/06/input b/06/input
new file mode 100644
index 0000000..7c9161b
--- /dev/null
+++ b/06/input
@@ -0,0 +1,50 @@
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