Fill coverage gaps in chapters 1-11

Audited each chapter file against actual LLPSI Familia Romana content
using parallel reviewers (Claude general-purpose subagents, codex, gemini).
Each chapter gained missing vocabulary, grammar points, common-error
patterns, and exercise types. ~190 lines added across 11 files.

Highlights per chapter:
- c1: geography proper nouns, -us fem. exceptions, num-question answer pattern
- c2: -er paradigm contrast (puer/vir/liber), -que rewrite drill
- c3: interrog. vs. relative quem, neque rewrite
- c4: nullus/UNUS NAUTA, -ius vocative, eius/suus contrast
- c5: relative pron. (nom.), suus agreement, -ae ambiguity
- c6: passus 4th-decl preview, mille/milia, autem postpositive
- c7: cui drill, plenus + gen., quod (because/relative/interrog.) trap
- c8: hic/ille discourse force, UNUS NAUTA class, quantus/quot trap
- c9: stem recovery from gen., ipse emphasis target, sub + abl. for location
- c10: fera vs. ferus, abesse/adesse/ire infinitives, quia/quod synonymy
- c11: full posse paradigm, dat. of reference (mihi dolet), gaudere syntax

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

llpsi-c6.md

@@ -6,9 +6,11 @@ Topic argument supported (e.g. `/llpsi-c6 motion`, `/llpsi-c6 passive`, `/llpsi-
 
 ## Vocabulary (new in Cap. VI)
 
-**Nouns**: *via -ae* f. (road); *mūrus -ī* m. (wall); *porta -ae* f. (gate); *lectīca -ae* f. (litter); *saccus -ī* m. (sack); *umerus -ī* m. (shoulder); *amīcus -ī* m. / *amīca -ae* f. (friend); *inimīcus -ī* m. (enemy); *equus -ī* m. (horse).
+**Nouns**: *via -ae* f. (road); *mūrus -ī* m. (wall); *porta -ae* f. (gate); *lectīca -ae* f. (litter); *saccus -ī* m. (sack); *umerus -ī* m. (shoulder); *amīcus -ī* m. / *amīca -ae* f. (friend); *inimīcus -ī* m. (enemy); *equus -ī* m. (horse); *passus -ūs* m. (pace, 4th decl.); *mīlle passūs* (a mile, sg.) / *mīlia passuum* (miles, w/ gen.).
 
-**Adjectives**: *longus -a -um* (long); *malus -a -um* (bad, opposite *bonus*); *fessus -a -um* (tired).
+**Place names**: *Tūsculum -ī* n.; *Brundisium -ī* n.; *Ōstia -ae* f.; *Graecia -ae* f.; *Germānia -ae* f.
+
+**Adjectives**: *longus -a -um* (long); *malus -a -um* (bad, opposite *bonus*); *fessus -a -um* (tired); *Rōmānus -a -um* (Roman).
 
 **Verbs** (3sg/3pl):
 - *it / eunt* (goes — irregular *īre*; compounds *adit/adeunt*, *abit/abeunt*, *exit/exeunt*)
@@ -53,6 +55,12 @@ Topic argument supported (e.g. `/llpsi-c6 motion`, `/llpsi-c6 passive`, `/llpsi-
 
 6. **Irregular verb *īre*** (3sg *it*, 3pl *eunt*); compounds *ad-it/ad-eunt*, *ab-it/ab-eunt*, *ex-it/ex-eunt*, *in-trat* (regular 1st-conj. compound, distinct from *it*).
 
+7. **4th declension preview** (recognition only): *passus -ūs* m. (pace) — note long *-ūs* in gen. sg. and nom./acc. pl. *Mīlle passūs* = "a mile" (lit. "a thousand paces"). Full 4th decl. comes later.
+
+8. ***mīlle* vs. *mīlia***: *mīlle* is **indeclinable** (sg., adjective-like): *mīlle passūs* "a thousand paces / one mile." *mīlia* is **declinable** noun (n. pl.) and takes **partitive genitive**: *duo mīlia passuum* "two miles" (lit. "two thousands of paces").
+
+9. ***ab* vs. *ex* — semantic distinction**: *ab/ā* = motion **from** (away from a point/edge); *ex/ē* = motion **out of** (out of an interior). *ab oppidō* (away from town) vs. *ex oppidō* (out of town). *procul ā/ab + abl.* = "far from": *procul ā Rōmā*.
+
 ## Common error patterns
 
 - **City name in wrong case for "to/from/in"**: *Mēdus it Rōmā* (wrong — abl. of source); should be *Rōmam it* (acc., motion to). Conversely *venit Rōmam* — wrong; should be *Rōmā venit*.
@@ -64,6 +72,11 @@ Topic argument supported (e.g. `/llpsi-c6 motion`, `/llpsi-c6 passive`, `/llpsi-
 - **3rd-conj. passive pl.**: *pōnitur → pōnuntur* (not *pōnitur*-pl. *pōnentur*). The vowel shifts to -u- in 3pl as in active.
 - ***it* vs. *eunt***: students sometimes write *Iūlius eunt* or *servī it*. *it* = 3sg, *eunt* = 3pl.
 - **Compound *adit/abit/exit*** confused with **3rd-conj. -it endings**: *exit* = "goes out" (irreg.), not regular 3rd-conj. *Compare *vehit* (3rd conj.).
+- **Treating *Brundisiī* as gen. sg.**: it's **locative** ("at Brundisium") — same form as gen., but means "where," not "of." Same trap with *Tūsculī*.
+- ***autem* misplaced first**: *autem* is **postpositive** — must be **second word** in clause. *Iūlius autem...* not *Autem Iūlius...*. (Same with *enim, vērō*.)
+- ***ad Rōmā* / *in Rōmam* for "to Rome"***: city names take **bare acc.** for motion to: *Rōmam (it)*. No *ad*; no abl.
+- ***vehit* (active) vs. *vehitur* (passive/middle)***: *equus puerum vehit* = "the horse carries the boy." *puer (equō) vehitur* = "the boy rides (on the horse)" — middle/reflexive sense.
+- ***ē/ex* before *h-***: treat *h* like a vowel for sandhi — use *ex hortō*, not *ē hortō*. (Same logic as *ab/ā*.)
 
 ## Exercise menu
 
@@ -77,6 +90,10 @@ Topic argument supported (e.g. `/llpsi-c6 motion`, `/llpsi-c6 passive`, `/llpsi-
 8. **PENSVM C Q&A** (in Latin): "Cūr Mēdus Rōmam it?" → *Rōmam it quia Lydia (amīca eius) Rōmae habitat.* "Quī Iūlium portant?" → *Ursus et Dāvus (eum portant).*
 9. **Translate** (passive sentences from chapter): "The bags are carried by Syrus and Leander." → *Saccī ā Syrō et Lēandrō portantur.* "Medus is loved by Lydia." → *Mēdus ā Lydiā amātur.*
 10. **Compound *īre* drill**: "Iūlius ___ in vīllam" (enters / goes into — use *intrat* or *it in*; both fine). "Servī ex vīllā ___" → *exeunt.* "Mēdus ab Tusculō ___" (note *ab* + abl., 3sg) → *abit.*
+11. **PENSVM B antonyms**: "Antonym of *malus*?" → *bonus.* "Antonym of *longus*?" → *brevis.* "Antonym of *amīcus*?" → *inimīcus.*
+12. **Two-step transformation**: active → passive → re-active with new subject. *Servus saccum portat* → *Saccus ā servō portātur* → "Now make Lēander the carrier" → *Lēander saccum portat.*
+13. **Mixed *quō/unde/ubi* rapid drill**: alternate randomly to force case-flexibility. "Quō it Mēdus?" / "Unde venit Iūlius?" / "Ubi habitat Cornēlius?" — student must switch acc./abl./loc. on the fly.
+14. **Reading Q&A in Latin**: "*Quid Mēdus in saccō portat?*" → student answers in Latin (*nihil* / *pecūniam*). "*Cūr Iūlius timet?*" → *quia in viā multī inimīcī sunt.*
 
 ## Session start