Retired in ISO 639-3: Merge into Ikizu [ikz]
Excerpt from change request document:
Ikizu and Sizaki share 95% lexical similarity and the same phonological innovations. Perceived intelligibility is very high. Ikizu and Sizaki speakers consider themselves separate ethnic groups with the same ancestral history speaking basically the same language. During group interviews, Sizaki speakers said that only when older people speak can one hear some differences.