C22212323232133313113313331333133313231323132222123322211232331   >>    C2221232323213331311331333133313331323132313222212332221123233   <<    C22212323232133313113313331333133313231323132222123322211232333   >>      C22212323232133313113313331333133313231323132222123322211232332   >>