C111113331333132322331333133313331333133313121111331333121111331323132212121   >>    C11111333133313232233133313331333133313331312111133133312111133132313221212   <<    C111113331333132322331333133313331333133313121111331333121111331323132212123   >>      C111113331333132322331333133313331333133313121111331333121111331323132212122   >>