C22212323232133313113313331333133313231323133311232332132323322321   >>    C2221232323213331311331333133313331323132313331123233213232332232   <<    C22212323232133313113313331333133313231323133311232332132323322323   >>      C22212323232133313113313331333133313231323133311232332132323322322   >>