C312322331333132212111133133313331312111133132313331333233121211   >>    C31232233133313221211113313331333131211113313231333133323312121   <<    C312322331333132212111133133313331312111133132313331333233121213   >>      C312322331333132212111133133313331312111133132313331333233121212   >>