Keyword Research Expansion

I'm targeting the keyword [PRIMARY KEYWORD] in my [NICHE].

Generate:
- 10 long-tail variations of this keyword
- 10 related keywords in the same topic cluster
- 5 question-based keywords
- 5 comparison keywords ([X] vs [Y])
- 5 "how to" keyword variations
- Content gaps: what's not being covered well?

For each, estimate difficulty (low/medium/high) and intent
(informational/commercial/transactional).