Pāṇini sūtras

The affix yak (± —y<?>a) comes in the sense of ‘nature or action thereof’, after a compound ending with pati, and after purohita &c.

1. pati+anta+purohita+ādibhyaḥपति+अन्त+पुरोहित+आदिभ्यः

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   pप्	patiपति	patiपति	pati [word]	patपत् + plus iइ
   aअ	antaअन्त	antaअन्त	end	antअन्त् + plus aअ
   pप्	purohitaपुरोहित	purohitaपुरोहित	purohita [word]	purohitपुरोहित् + plus aअ
   āआ	ādiआदि	ādibhyaḥआदिभ्यः	etc.	ādआद् + plus ibhyãइभ्य̃

2. yakयक्

   Part	Lexeme	Sandhi form	Meaning	Stem
   yय्	yakयक्	yakयक्	yakयक्	yakयक्

Anuvṛtti

1. tva+talauत्व+तलौ 5·1·119

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   tत्	tvaत्व	tvaत्व	tvaत्व	tvत्व् + plus aअ
   tत्	talतल्	talauतलौ	talतल्	talतल् + plus auऔ

2. karmaṇiकर्मणि 5·1·124

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   kक्	karmanकर्मन्	karmaṇiकर्मणि	job	karmकर्म् + plus aṇiअणि