The major Odu appear in a specific order of seniority, though this may vary slightly by lineage (e.g., the Oyo lineage).
For those interested in delving deeper into the world of Odu Ifa and Ifa divination, we recommend: 256 Odu Ifa And Their Meaning Pdf
Each major Odu combines with another to create a minor Odu. The major Odu appear in a specific order