C1111233131211111211113313331323133313331313212111133132322333121   >>    C111123313121111121111331333132313331333131321211113313232233312   <<    C1111233131211111211113313331323133313331313212111133132322333123   >>      C1111233131211111211113313331323133313331313212111133132322333122   >>