• eyukyuan,
• dyukyuan,
• fyukyuan,
• tyukyuan,
• 5yukyuan,
• 4yukyuan,
• rtukyuan,
• rgukyuan,
• rhukyuan,
• ruukyuan,
• r7ukyuan,
• r6ukyuan,
• ryykyuan,
• ryhkyuan,
• ryukuan,
• ruykyuan,
• ryukuyan,
• ryukiuan,
• ryukyuao,
• Rukkyuan

The adjective form of the word "Ryukyuan" is "Ryukyuan". The word remains the same in both the noun and adjective form.

The plural form of "ryukyuan" is "ryukyuans".

The singular form of the word "ryukyuan" is "ryukyuan". The word does not change in its singular form.