Plural Rule: nx Becomes nges
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
A singular ending in n x forms its plural by changing the n x to n g e s.
Show
Phalanx becomes phalanges; larynx becomes larynges; meninx becomes meninges.
Watch for
The g goes soft in the plural: fa LAN jeez.