• trein,
• trian,
• trene,
• trean,
• 6reen,
• 5reen,
• trwen,
• trsen,
• trden,
• trren,
• tr4en,
• tr3en,
• tresn,
• tre4n,
• tre3n,
• treeh,
• treeen,
• treenn,
• Treeo,
• tr en

• trema,
• trine,
• tryon,
• triune,
• trainee,
• tureen,
• trm,
• trahan,
• Triana,
• Trinh,
• Treena,
• Tran,
• try-on,
• trna,
• try on,
• Trina,
• traina,
• Trena,
• train,
• Trone,
• triano,
• troyan.

The plural of the "Treen" can be the "treens".

The singular of the "Treen" can be the "Treen".