Solutions Investigated systematically has 9 entries with similar clues
- scopedInvestigated, with "out"
- codifyClassify systematically
- digestClassify systematically
- expoundExplain a theory systematically
- codifiedArranged systematically
- unchartedNot yet mapped, explored, or investigated
- lightningWeather phenomenon notably investigated by Benjamin Franklin in 1752
- catalogueClassify systematically
- pull-to-piecesSystematically criticise