• oair glass,
• lair glass,
• 0air glass,
• pzir glass,
• psir glass,
• pwir glass,
• pqir glass,
• paur glass,
• pajr glass,
• pakr glass,
• paor glass,
• pa9r glass,
• pa8r glass,
• paie glass,
• paid glass,
• paif glass,
• pait glass,
• pai5 glass,
• pai4 glass,
• pair flass

The adjective form of the phrase "pair glass" would be "paired glass".

The plural form of the word "pair glass" is "pairs of glasses".

The singular form of the word "pair glass" is "pair glass". The word "pair" functions as a singular noun in this case.