C22212323232133313113313331333133313231323132222123332113121211   >>    C2221232323213331311331333133313331323132313222212333211312121   <<    C22212323232133313113313331333133313231323132222123332113121213   >>      C22212323232133313113313331333133313231323132222123332113121212   >>