val positionsContainer = Array<MutableCollection<Int>>(data.numberOfPages + 1) { mutableListOf<Int>() }
    for (id in data.calls.indices) {
        positionsContainer[data.calls[id]].add(id)
    }
    for (id in 1..data.numberOfPages) {
        positionsContainer[id].add(data.calls.size + 1)
    }
    val positions = Array<Array<Int>>(data.numberOfPages + 1) { i -> Array<Int>(positionsContainer[i].size) { 0 } }