Ogonek

Ogonek (Polish for "little tail") is a diacritic hook placed under the lower right corner of a vowel in the Latin alphabet used in Polish, Lithuanian, Navajo and Tutchone. In Polish and Navajo it indicates that the vowel is nasalized (in Tutchone too (?)); in Lithuanian it formerly indicated nasalization but this is no longer distinctive. In Navajo it can be combined with the acute accent.

The HTML/Unicode numbers for ogonek letters are:

Upper Case		Lower Case
Letter	HTML	Letter	HTML
Ą	Ą	ą	ą
Ę	Ę	ę	ę
Į	Į	į	į
Ǫ	Ǫ	ǫ	ǫ
Ų	Ų	ų	ų