Ana zare filogin hex a ƙarshen kuma saman filogin yana ɗaukar siffar hexagon.
Ana amfani da filogin simintin simintin ƙarfe don hawa a ƙarshen bututu ta hanyar haɗin zaren namiji tare da ƙarshen ƙarshen a wancan gefen, don toshe bututun kuma ya samar da hatimin ruwa ko iskar gas.