सोपानम् ३१: २१ सुप्-विधानम्, अनभिहिते (२.३.१) & कारक-विभक्ति-विन्यासः
Master the allocation engine of the 21 nominal affixes (४.१.२ स्वौजस...), governed by the master syntactic condition (२.३.१ अनभिहिते), organized into 7 Trika triplets (१.४.१०३ सुपः), and mapped across the 6 kārakas + śeṣa.
२१ सुप्-प्रत्यय-विधानम् & अनभिहिते-महा-अधिकारः
In Stage 2 of the Subanta pipeline, the abstract semantic intent (विवक्षा) is instantiated into physical phonological matter by affixing one of 21 nominal endings under 'स्वौजसमौट्...' (४.१.२). Crucially, case assignment is regulated by the master condition 'अनभिहिते' (२.३.१):
2nd–7th cases attach ONLY when the kāraka relation is unexpressed by the verb. If expressed, Prathamā applies!
The 21 affixes are rigorously grouped into 7 sequential triplets corresponding to Prathamā through Saptamī.
Within each triplet, the 1st affix is singular, 2nd is dual, and 3rd is plural based on numerosity intent.
The first 5 affixes in masculine and feminine form the strong stem boundary triggering Guṇa/Vṛddhi.
पाणिनीय-पञ्च-सोपान-चक्रम् — The Complete 5-Stage Derivation Arc
विवक्षा & प्रातिपदिकम्
Intent & Stem Essence
२१ सुप् & कारक-विन्यासः
21 Sup & Kāraka Mapping
इत्-संज्ञा & 'तुस्माः' कवचम्
It-Compiler & Sup Armor
अङ्ग-कार्यम् & 'चोः कुः'
Stem Forge & Velar Shift
पद-कार्यम् & २१ रूपाणि
Pada & Living Forms