C22212323232133313113313331333133313231323133313332233122323111111213121   >>    C2221232323213331311331333133313331323132313331333223312232311111121312   <<    C22212323232133313113313331333133313231323133313332233122323111111213123   >>      C22212323232133313113313331333133313231323133313332233122323111111213122   >>