These five Vedic forms are irregularly formed - 1. sudhita 2. vasudhita 3. nemadhita 4. dhiṣva and 3. dhiṣīya,
Of these five, सुधित, वसुधित and नेमधित are formed from the root धा with the affix क्त, preceded by सु, वसु and नेम ॥ As गर्भं माता सुधितम् (= सुहितम्), वसुधितमग्नौ जुहोति (= वसुहितं), नेमधिता बाधन्ते (= नेमहिता) ॥ धिष्व is Imperative 2nd Person Singular of धा, there is no reduplication, as धिष्व सोमम् = धत्स्व ॥ धिषीय is Benedictive
Atmanepada Ist Person Singular of धा, the regular form being धासीय ॥,