The affixes yat and ḍhakañ come optionally after the word kula when it is not preceded by any other word which gets the designation of pada -- suptiṅantaṃ padam [[1.4.14]].,
The word अपूर्वपद means when the word 'kula' is not the last member of a compound. Thus कुल्यः , कौलेयकः ॥ By the use of the word 'optionally,' we get the affix ख also. Thus कुलीनः ॥ The word कु꣡ल्यः has udatta on the first syllable (VI. I. 213).
The word पद has been defined in (l. 4. 14). The word बहु is not a pada. Therefore बहुकुल will take these affixes. Thus बहुकुल्यः , बाहुकुलेयकः and बहुकुलीनः ॥,