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| graduated-interval recall (The intervals are: 5 seconds, 25 seconds, 2 minutes, 10 minutes, 1 hour, 5 hours, 1 day, 5 days, 25 days, 4 months, and 2 years. The intervals are not followed exactly, but have upper and lower bounds. Alex_Odeychuk) | |||
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| graduated-interval recall (The intervals are: 5 seconds, 25 seconds, 2 minutes, 10 minutes, 1 hour, 5 hours, 1 day, 5 days, 25 days, 4 months, and 2 years. The intervals are not followed exactly, but have upper and lower bounds. Alex_Odeychuk) | |||