1. Habka wax-soo-saarka iyo wax-soo-saarka ee tuubooyinka birta ah ee aan sinnayn waxaa loo qaybin karaa tuubooyinka kulul, tuubooyinka qaboojiyaha, tuubooyinka qabow, tuubooyinka dibadda, iwm iyadoo loo eegayo hababka wax soo saarka ee kala duwan. 1.1. Tuubooyinka kulul ee duuban ee bilaa-laabashada ah ayaa guud ahaan lagu soo saaraa unugyo duuban oo toos ah. The...
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