At a 4 way stop, can you continue driving if you're the 1rst one there and the other cars coming the other directions are coming down the...?

Road still? Like if I arrived at the 4 way stop and there's other cars coming from different directions, can I continue driving if they haven't gotten to the 4 way stop yet or do I have to wait for the other cars to stop too and since I'm the first one there then I go first
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