C22212323232133313113313331333133313231333112123221322223331331   >>    C2221232323213331311331333133313331323133311212322132222333133   <<    C22212323232133313113313331333133313231333112123221322223331333   >>      C22212323232133313113313331333133313231333112123221322223331332   >>