converts a following bu-letteral into a sumti representing the musical natural note with that name.
The next bu-letteral is absorbed and a natural accidental is given to it; e.g. "zi'e'a gy" means "the note G-natural". May be subscripted (zi'e'a xi re, etc.) to refer to nonstandard predefined accidentals. The first two syllables of the cmavo in the zi'e'a series were chosen for the similarity to "zgike". See also: zi'e'e, zi'e'i, zi'e'o and zi'e'u.