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Another link to the same page that works: https://www.supermemo.com/articles/20rules.htm https://www.supermemo.com/articles/20rules.htm
by niea_11 8y ago
Another link to the same page that works: https://www.supermemo.com/articles/20rules.htm https://www.supermemo.com/articles/20rules.htm
- pure-awesome 8y agoDoesn't work for me.