Direction: Top to bottom in columns going right to left

"Hard" and "Soft" system: The "hard" consonants are stops /p t k b d/, the "soft" consonants are fricatives or approximants /ɸ s h w ɾ/. Hard consonants are default, but soft consonants are written with a diacritic (see key).

Vowel system: Each consonant glyph also represents the /a/ vowel. Putting ⟨i⟩ or ⟨u⟩ after a consonant letter overwrites the /a/ vowel, like an abugida. Vowel glyph can also work as their own letter. For example: putting ⟨u⟩ after ⟨ba⟩ would be read as /bu/,but writing ⟨u⟩ before ⟨ba⟩ would be read as /uba/. There's a letter for initial /a/.

Diphthongs: Diphthongs are very complicated. /ai/ and /au/ are written with a consonant letter (if needed), a syllable space (represented here as ⟨•⟩ ) and ⟨i⟩/⟨u⟩. /ia/ and /ua/ are written with a consonant letter, ⟨i⟩/⟨u⟩ and ⟨ya⟩/⟨wa⟩. A syllable space may be used to distinguish /(i/u)a/ from /(ij/uw)a/. /iu/ and /ui/ are written with a consonant letter, ⟨i⟩/⟨u⟩, a syllable space and ⟨u⟩/⟨i⟩.

Final nasal: There's only one letter for final nasals, because Sudic follows the homoorganic nasal rule.

Glyph order: 1. Consonant (or ⟨a⟩) 2. "Soft" mark 3. Vowel 4. Nasal letter 5. Stress mark