| 11. | The block system was not in operation, and communication with adjacent locations was limited.
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| 12. | Credo uses the block system, where students study one subject intensively for four weeks.
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| 13. | The traditional block systems will remain on these lines despite the installation of CBTC.
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| 14. | Then Hiigli set out to organize synergetic geometry into a block system for children.
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| 15. | Automatic axle-counting block system; installation of these systems took place from 1989 to 1993.
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| 16. | A primitive if it has no other block systems.
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| 17. | Most institutions either use a 7.5, 8, 10, 12, 15 or 20 credit block system.
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| 18. | This was called the " absolute block system ".
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| 19. | Princeton operates under what is known as the Block scheduling system, specifically the four-block system.
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| 20. | The tournament was also divided into a two-block system commonly used in standard wrestling match.
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