private List<string>[] GetList(List<string> listStr, int count)
{
    List<string>[] result = new List<string>[count];
    for(int i=0; i<count; i++)
    {
        result[i] = new List<string>();
    }
    for(int i=0; i<listStr.Count; i++)
    {
        result[i % count].Add(listStr[i]);
    }
    return result;
}