C312322331333132212111133133313331323133313221211111231211111211113311221123121   >>    C31232233133313221211113313331333132313331322121111123121111121111331122112312   <<    C312322331333132212111133133313331323133313221211111231211111211113311221123123   >>      C312322331333132212111133133313331323133313221211111231211111211113311221123122   >>