C22212323232133313113313331333133313231323133311232332122132111   >>    C2221232323213331311331333133313331323132313331123233212213211   <<    C22212323232133313113313331333133313231323133311232332122132113   >>      C22212323232133313113313331333133313231323133311232332122132112   >>