thil a hun umtertu

occasion – Example: The dog which was the occatson of the quarrel had run away = I siknak a umtertu uico kha a tli diam cang

thil a hung um , a hung can

happen – Example: They told us all that happened on their trip = An khual tlawnnak i thil a cangmi vialte an kan chimh

thil a hung ummi

case – Example: Only one case of robbery was reported to the police = Fir a hung ummi pakhat lawng palik sihan an thanh