C312322331333132212111133133313331312111133132313331331123232121   >>    C31232233133313221211113313331333131211113313231333133112323212   <<    C312322331333132212111133133313331312111133132313331331123232123   >>      C312322331333132212111133133313331312111133132313331331123232122   >>