C22212323232133313113313331333133313231323132222123323311323121   >>    C2221232323213331311331333133313331323132313222212332331132312   <<    C22212323232133313113313331333133313231323132222123323311323123   >>      C22212323232133313113313331333133313231323132222123323311323122   >>