Caster birki, bisa ga aikin za a iya raba uku general: birki dabaran, birki shugabanci, birki biyu.A. Ƙafar birki: mai sauƙin fahimta, an ɗora shi akan hannun hannu ko saman ƙafar ƙafa, mai sarrafa ta na'urar ƙafar hannu.Aikin shine danna ƙasa, dabaran ba zata iya juyawa ba, amma tana iya ...
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