C1111233131211111211113313331333133313113213331311331311331323132321311   >>    C111123313121111121111331333133313331311321333131133131133132313232131   <<    C1111233131211111211113313331333133313113213331311331311331323132321313   >>      C1111233131211111211113313331333133313113213331311331311331323132321312   >>