C1123132332111133131211113313331333132322331323133313113313233313211   >>    C112313233211113313121111331333133313232233132313331311331323331321   <<    C1123132332111133131211113313331333132322331323133313113313233313213   >>      C1123132332111133131211113313331333132322331323133313113313233313212   >>