C1123132332111133131211113313331333132313231333133313232113311211   >>    C112313233211113313121111331333133313231323133313331323211331121   <<    C1123132332111133131211113313331333132313231333133313232113311213   >>      C1123132332111133131211113313331333132313231333133313232113311212   >>