C22212323232133313113313331333132313231333132212132311323213211   >>    C2221232323213331311331333133313231323133313221213231132321321   <<    C22212323232133313113313331333132313231333132212132311323213213   >>      C22212323232133313113313331333132313231333132212132311323213212   >>