C22212323232133313113313331333133313231323133313331121231221313221211   >>    C2221232323213331311331333133313331323132313331333112123122131322121   <<    C22212323232133313113313331333133313231323133313331121231221313221213   >>      C22212323232133313113313331333133313231323133313331121231221313221212   >>