C22212323232133313113313331333132313331323331123233121213311231   >>    C2221232323213331311331333133313231333132333112323312121331123   <<    C22212323232133313113313331333132313331323331123233121213311233   >>      C22212323232133313113313331333132313331323331123233121213311232   >>