Using the gender element system, elements can be combined, making four element combinations. The elements being combined are eluvian (feminine/water), fervian (masculine/fire), tellusian (neutral/earth), ventulian (undefined/air), alterian (xenine/spirit).
A person with four gender elements may be fluid between the them, or their elements may be static. Their elements may be split evenly between the four them, or it may be unequal.
Most of the four element combinations were coined on a google spreadsheet[1]. The coining date is only know for one of them, resonian, on January 1, 2018[2]. None of them have flags, but it it is assumed that they would follow the same format of the other flag, with a large stripe in the center and four smaller stripes on the top and bottom and and four pointed star in the center. The potential color pallets for the flags are unknown, as most of the elements are abstract concepts or phenomena that cannot be seen.