C22212323232133313113313331333132313331323132321111312233123311   >>    C2221232323213331311331333133313231333132313232111131223312331   <<    C22212323232133313113313331333132313331323132321111312233123313   >>      C22212323232133313113313331333132313331323132321111312233123312   >>