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3 matroids

label ▲rank ⇅n ⇅#bases ⇅#automorphisms ⇅simple ⇅char set ⇅rs dim ⇅birational type ⇅
3.11.1287053111511✓all2ruled over the genus 1 curve 14a4
4.9.19748491161✓∅-1ruled over the genus 1 curve 14a4
4.9.21452491163✓all4ruled over the genus 1 curve 14a4