C22212323232133313113313331333132313331323133313331213132333112223111221   >>    C2221232323213331311331333133313231333132313331333121313233311222311122   <<    C22212323232133313113313331333132313331323133313331213132333112223111223   >>      C22212323232133313113313331333132313331323133313331213132333112223111222   >>