C22212323232133313113313331333133313231323133313332132331212313321   >>    C2221232323213331311331333133313331323132313331333213233121231332   <<    C22212323232133313113313331333133313231323133313332132331212313323   >>      C22212323232133313113313331333133313231323133313332132331212313322   >>