C312322331333132212111133133313331312111133132313331333112211231121   >>    C31232233133313221211113313331333131211113313231333133311221123112   <<    C312322331333132212111133133313331312111133132313331333112211231123   >>      C312322331333132212111133133313331312111133132313331333112211231122   >>