ideas:
  - return n (10, max 10, …) words with x-length shared suffix ❌
  - allow to speficy expected min a max suffix match length ❌
  - custom letter equalizer — use guidance instead
  - use verbose method names ✓
  - case insensivity ✓
  - return n words ✓
  - check with 'imp:' also  ✓
