once a week, three times a week, twice a week, , once a week, twice a week, three times a week, , every Saturday, every day, twice a week, , once a week, every day, twice a week, , three times a week, on the weekend, once a week, , once a week, every day, twice a week, , three times a week, twice a week, once a week, , every day, four times a week, on the weekend.

Frequency practice

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