C22212323232133313113313331333132313331323132321111313233313121   >>    C2221232323213331311331333133313231333132313232111131323331312   <<    C22212323232133313113313331333132313331323132321111313233313123   >>      C22212323232133313113313331333132313331323132321111313233313122   >>