C22212323232133313113313331333133313231323133313331121231221323211211   >>    C2221232323213331311331333133313331323132313331333112123122132321121   <<    C22212323232133313113313331333133313231323133313331121231221323211213   >>      C22212323232133313113313331333133313231323133313331121231221323211212   >>