1. Shawng nnan, sau n pru mat hkra, engine grup yin na hose ni a joint ni hpe n-gun dat dat u.}}
2. Lahkawng ngu na hta, circuit breaker, short circuit, hte lamu ga matut mahkai lam ni hpe pat shingdang na matu, line hte wan jak ni a matut mahkai lam ni hpe n-gun dat nna, wan jak ni a shingra tara hku galaw ai lam hpe hkra machyi shangun na n re..
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