C111123313121111121111331323133313233313232233132313331323211221   >>    C11112331312111112111133132313331323331323223313231333132321122   <<    C111123313121111121111331323133313233313232233132313331323211223   >>      C111123313121111121111331323133313233313232233132313331323211222   >>