The affix kha (īna) comes in the sense of 'who purposes to go' after the words 1. avārapāra 2. atyanta and 3. anukāma being in the Accusative -2nd case in construction.,
The word गामी means 'गमिष्यति', see 3.3.3. The genitive case is prohibited by 2.3.70: the word गामी governing the accusative. Thus अवारपारं गामी = अवारपारीणः ॥
Vart:- So also when the words are reversed. As पारावारीणः ॥ So also when the words are taken separately as, अवारीणः and पारीणः ॥
So also अत्यन्तं गामी = अत्यन्तीनः = भृशं गन्ता ॥ As अनुकामीनः = यथेष्टं गन्ता ॥,