ada = be, exist, be in stock, be available, present; there is, are
(kata sehari-hari – daily-use-word)

ada kalanya sometimes
(kata umum , common word)

ada tidaknya dewan itu the existence or nonexistence of the council; (informal) be,
be present; have, own; did (do so-and-so)
(kata umum, a common word)

adakah Is it the case that
(kata umum, common word)

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