C22212323232133313113313331333132313231333132212132311213133121   >>    C2221232323213331311331333133313231323133313221213231121313312   <<    C22212323232133313113313331333132313231333132212132311213133123   >>      C22212323232133313113313331333132313231333132212132311213133122   >>