C22212323232133313113313331333133313231323133313331121231221323213211221   >>    C2221232323213331311331333133313331323132313331333112123122132321321122   <<    C22212323232133313113313331333133313231323133313331121231221323213211223   >>      C22212323232133313113313331333133313231323133313331121231221323213211222   >>