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4 matroids

label ▲rank ⇅n ⇅#bases ⇅#automorphisms ⇅simple ⇅char set ⇅rs dim ⇅birational type ⇅
3.9.423975108✓∅-1rational
3.9.10439766✓∅-1rational
3.9.1123979144✓∅-1rational
3.9.11339798✓∅-1rational