fun foo() {
    viewModelScope.launch {
        val inputList = listOf("a", "b", "c")
        val deferredList = mutableListOf<Deferred<String>>()
        repeat(3) { index ->
            deferredList += async {
                delay((1L..10000L).random())
                inputList[index]
            }
        }
        val outputList = deferredList.map { it.await() } // a, b, c
    }
}

awaitAll

deferredList

inputList.map { item -> async { doSuspendStuff(item) } }.awaitAll()