In a bahuvrīhi samāsa expressing a Name or comparison the second members 1. kaṇṭha 2. pṛṣṭha 3. grīvā and 4. jaṅghā have acute accent (udātta) on the first syllable.,
Thus Name: शितिक꣡ण्ठः, नीलक꣡ण्ठः ॥ Comparison खरक꣡ण्ठः, उष्ट्रक꣡ण्ठः ॥ Name काण्डपृ꣡ष्टः, नाकपृ꣡ष्टः ॥ Resemblance गोपृ꣡ष्ट, अजपृ꣡ष्टः ॥ Name सुग्री꣡वः, नीलग्री꣡वः, दशग्री꣡वः ॥ Resemblance गोग्रीवः, अश्वग्री꣡वः ॥ Name नाडीज꣡ङ्घः, तालज꣡ङ्घः ॥ Resemblance गोज꣡ङ्घः, अश्वज꣡ङ्घः, एणीज꣡ङ्घः ॥
The sutra कण्ठपृष्ठग्रीवाजंघ is in Neuter gender, and जंघा is shortened as it is a Samahara Dvandva. In the case of सुग्रीव, the accent would have fallen on the final व by 6.2.172, this ordains acute on ग्री ॥,