In an avyayībhāva samāsa the following second terms have acute accent (udātta) on their first syllable - 1. kūla 2. tīra 3. tūla 4. mūla 5. śālā 6. akṣa and 7. sama,
Thus परिकू꣡लम्, उपकू꣡लम्, परिती꣡रम्, उपती꣡रम्, परितू꣡लम्, उपतू꣡लम्, परिमू꣡लम्, उपमू꣡लम्, परिशी꣡लम्, उपशा꣡लम्, उपा꣡क्षम्, पर्यक्षम्, सुष꣡मम्, विष꣡मम्, निष꣡मम् and दुःष꣡मम् ॥ These last four are to be found in Tishthadgu class of compounds (II. I. 17). Why do we say 'कूल &c'? Observe उपकुम्भम् ॥ Why do we say \in an Avyayibhava compound?\ Observe परमकूलम्, उत्तमकूलम् ॥ After the prepositions परि, प्रति, उप and अप, the words कूल &c would have become accentless by 6.2.33, the present sutra supersedes 6.2.33, and we have accent on कूल &c and not on the Prepositions.,