How does one create a search that looks for specific Hebrew vowels? I'm trying to look for the distinctives in the two prefix forms (yaqtul and yaqtulu), which are often clearly represented in certain forms such as III-heh's, middle weaks, etc... Thus, all I need to do is to search for the root ??HEH with a certain vowel pattern or the root ?WAW/YOD? with another vowel pattern.... but I can't figure out how to select certain vowels when searching.

Thanks!