C312322331333132212111133133313331312111133132313331123311233131121132311   >>    C31232233133313221211113313331333131211113313231333112331123313112113231   <<    C312322331333132212111133133313331312111133132313331123311233131121132313   >>      C312322331333132212111133133313331312111133132313331123311233131121132312   >>