English Wikipedia has an article on:

OAS (disambiguation)

Wikipedia

The word “oas” appears in many languages with many variations in the use of capitalization, punctuation, and diacritics.

Capitalization and punctuation

Diacritics

Other scripts

See also

• Appendix:Variations of "o"
• Appendix:Variations of "a"
• Appendix:Variations of "s"