Ƙirƙirar wani nau'i mai rikitarwa na wannan jumla Benford ya fara samar da fina-finai masu zaman kansu a shekara ta 2007.
Tabbas, wani nau'i mai rikitarwa na jumla shine "Benford ya fara gudanar da shirye-shiryen fina-finai masu zaman kansu a shekara ta 2007 sannan a shekara ta 2009 Vassal Benford ya fadada kamfanoninsa kuma ya fara samarwa, da kuma rarraba fina-finai. "