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A Language That Gets By on Just Twelve Letters

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A Language That Gets By on Just Twelve Letters

On Bougainville, the Central Rotokas tongue runs on one of the smallest sound systems on Earth — and an everyday alphabet of only twelve letters.

Verified · Max Planck Institute for Psycholinguistics

Most of the world’s writing systems juggle dozens of letters to capture a sprawl of sounds. Rotokas, spoken by roughly 4,000 people on Bougainville Island in Papua New Guinea, barely needs a handful.

Its core dialect, Central Rotokas, is famous among linguists for possessing one of the smallest phoneme inventories on Earth — just six consonants (p, t, k, b, r, g) and five vowels (a, e, i, o, u, which can be short or long). Only the Amazonian language Pirahã has been claimed to rival it for fewer distinct sounds.

Eleven sounds. Twelve letters. An entire language fits in the space most alphabets reserve for vowels.

That spareness carries straight into writing. The Rotokas alphabet uses just twelve Latin lettersa, e, g, i, k, o, p, r, s, t, u, v — with no accents or special characters, developed in the mid-20th century by missionary linguists. It is widely cited as one of the shortest alphabets in active use, mapping almost one letter to each sound the language makes.

12
letters in the alphabet
11
distinct phonemes
6
consonants in Central Rotokas

Sources & references

2 references

Well-established. Corroborated by 2 independent sources.

1 Max Planck Institute for Psycholinguistics institution “Robinson, S. (2006), 'The phoneme inventory of the Aita dialect of Rotokas', Oceanic Linguistics. The abstract notes 'Rotokas is famous for possessing one of the world's smallest phoneme inventories.'” mpi.nl ↗
2 Omniglot reference “States that 'Central Rotokas has one of the smallest inventories of phonemes in the world' and documents the twelve-letter Rotokas alphabet.” omniglot.com ↗
✓ Last reviewed Jun 9, 2026

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