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  1. Binary digits in a row
  2. Hand doing math homework
  3. Soap bubbles on a dodecahedral frame
  4. 3<4
  5. Binary digits in a row
  6. Geometry set
  7. old-fashioned drawing compass
  8. Differential analyser, 1954
  9. Geometry tools
  10. E=Mc Squared
  11. old-fashioned drawing compass