C22212323232133313113313331333132313231333132212132311112312331   >>    C2221232323213331311331333133313231323133313221213231111231233   <<    C22212323232133313113313331333132313231333132212132311112312333   >>      C22212323232133313113313331333132313231333132212132311112312332   >>