C312322331333132212111133133313331312111133132313331333321333133311231211   >>    C31232233133313221211113313331333131211113313231333133332133313331123121   <<    C312322331333132212111133133313331312111133132313331333321333133311231213   >>      C312322331333132212111133133313331312111133132313331333321333133311231212   >>