• qagga wagga,
• aagga wagga,
• sagga wagga,
• eagga wagga,
• 3agga wagga,
• 2agga wagga,
• wzgga wagga,
• wsgga wagga,
• wwgga wagga,
• wqgga wagga,
• wafga wagga,
• wavga wagga,
• wabga wagga,
• wahga wagga,
• wayga wagga,
• watga wagga,
• wagfa wagga,
• wagva wagga,
• wagba wagga,
• wagha wagga

The word "Wagga Wagga" does not have a plural form. It is already a plural noun. It refers to a city in Australia with the same name.

The singular form of the word "Wagga Wagga" is still "Wagga Wagga". It is the name of a city and also the name of a dialect of the Wiradjuri language spoken by the Wiradjuri people, who are the traditional custodians of the land in and around the city. Thus, "Wagga Wagga" does not have a singular or plural form in the traditional sense.