10955
AIM calculations not only reveal the expected O - H . . . Ar and pi . . . Ar interactions in the Ar . . . gauche - PA complex , but also novel C . . . Ar ( of CH2OH group ) and O - H . . . Ar interactions in the Ar . . . trans - PA complex .
 O - H, C, CH2OH, O - H
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 O - H, C, CH2OH, O - H