Expert linguists can also help, try to reach out to local linguistic universities (both teachers and students) and see if they can help to gather a diverse set of sound-diverse sentences in your language.
Vativi va tindzimi va nga tlhela va pfuna, va ringeta ku fikelela tiyunivhesiti ta tindzimi ta laha kaya (vadyondzisi na swichudeni hi vumbiri ka vona) na ku vona loko va nga pfuneta ku hlengeleta sete yo hambana ya swivulwa swo hambana swa mpfumawulo eka ririmi ra wena.