C22212323232133313113313331333132313231333132212132312221211321   >>    C2221232323213331311331333133313231323133313221213231222121132   <<    C22212323232133313113313331333132313231333132212132312221211323   >>      C22212323232133313113313331333132313231333132212132312221211322   >>