C111123313121111121111331333132313331323133313331323133112111133132233312121   >>    C11112331312111112111133133313231333132313331333132313311211113313223331212   <<    C111123313121111121111331333132313331323133313331323133112111133132233312123   >>      C111123313121111121111331333132313331323133313331323133112111133132233312122   >>