C22212323232133313113313331333132313331323132321111311313232221   >>    C2221232323213331311331333133313231333132313232111131131323222   <<    C22212323232133313113313331333132313331323132321111311313232223   >>      C22212323232133313113313331333132313331323132321111311313232222   >>