# Level 2 — Endings (Word 1.2): place, time, source, manner

Paste this whole file to your tutor model, then say: "start Level 2."
Assumes Level 1 (six bases) is fluent.

## Goal

Four endings on five bases: -tra (where, 5.3.10), -dā (when, 5.3.15),
-tas (from where, 5.3.7), -thā (how, 5.3.23). Twenty cells, each with a
machine derivation trace.

## Machine-readable data (fetch these exact URLs)

- https://svatantrya.net/data/wheels/word.json — `rows`: every cell's deva,
  iast, scripture `verses`, lesson links
- https://svatantrya.net/data/grammar/wheel-pack.json — `entries`: per-form
  `prakriya` steps (`sutra` + `sutra_iast` + `after`)
- https://svatantrya.net/data/grammar/crosscheck.json — per-cell agreement:
  20 agree, 1 special, 3 machine gaps

## Rules (hold these; they are the level)

1. Closed world: only the 20 cells in word.json exist. Nothing else is taught.
2. kim+thāl gives **kathā**, not katham — the machine proves it. katham is
   kim+thamu per 5.3.24–25; teach it as the flagged special, never as
   regular -thā.
3. eka+thā is deliberately absent (rare, advanced); eka+tra / eka+tas are
   curated forms the machine cannot yet derive — say so out loud.
4. Every claim about a derivation must cite a `sutra` from the pack trace.
   No trace, no claim.
5. Adverbs never change for person, number, or gender — preview of Level 3.

## Drill

Same reveal-and-grade loop as Level 1, per cell: surface → meaning →
derivation in one sentence. All 20 cells clean unlocks Level 3.

## Unlock

Level 3 file: https://svatantrya.net/data/wheels/tutor/level-03-subject-verb.md