1. Dropping i, a, or e too early. Use the full Mini-ma form until it is automatic.
  2. Putting modifiers after nouns. Say mega kasa, not kasa mega.
  3. Forgetting sa when you want clear possession. Prefer mi-sa buku in beginner writing.
  4. Using bare ke for everything. Prefer ke-man, ke-loke, ke-tempo, ke-rason, ke-modo.
  5. Putting no too late. Prefer mi i no pale.
  6. Mixing up ki and ke-*. ki links non-interrogative content clauses; ke-* asks content questions; se marks embedded “whether”.
  7. Making helper order random. Learn the beginner pattern: no, then tense, then aspect, then helper, then main verb.
  8. Reading de, en, and go the same way everywhere. Before the main verb they can be helpers; after the main verb, or after a or e, they are relation words.
  9. Forgetting formal Mini-ma question and command markers. Prefer tu i pale ke? and favo i pale lenta.
  10. Using da for both “that” and contingent conditionals. Prefer oda for distal “that” and keep da for conditional results.
  11. Treating every transparent pattern as open grammar. Learn listed ordinals and the fixed ke-* / nulo-* sets as taught.
  12. Trying to build heavy relative clauses too early. Keep ki relatives narrow with one omitted core argument. If the phrase becomes hard to read, paraphrase it as two simpler clauses.