11. The Hausas are from the country's Muslim north. 12. The latest clashes began after a Hausa night guard was killed Sunday. 13. Yoruba youths then launched revenge attacks on Hausa settlements in other neighborhoods. 14. Yoruba youths then launched revenge attacks on Hausa sections of other neighborhoods. 15. Most of those killed are believed to be Hausas , police said. 16. Yoruba fighters, however, said the Hausas made the first move. 17. The Yoruba fighters said the Hausas made the first move. 18. In Hausa it is ungrammatical to do the same with coordinating conjunctions. 19. The Hausa and Kanuri peoples play a variety of spike-lutes. 20. He preferred to advance prominent Hausa and Fulani leaders from traditional structures.