deriv SD cv (373) ashtadhyayi.com hei.de L 373 ETT STT a 6.1.5 ALPH OLDHOMEPAGE NEWHOMEPAGE
Both together are called /abhyasta.
So, in juhoti जुहोति, ju जु is the /abhyAsa, and **juhu- जुहुॱ is the /abhyasta.
The roots mentioned in jakSityAday... > are /abhyasta too, iso not being "reduplicates" technically.
pUrvo 'bhyAsaH < | 61005 ubhe:: abhyastam | > jakSityAdayaS SaT |
atv;as-antasya cAdhAtoH <<< | L 373 | >>> nAbhyastAc chatuH |