No | Pattern | Freq | Relations |
---|---|---|---|
1 | how often do [pers pn] [vb infin] [adv] | 6 |
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2 | [Wh adv] often do [pers pn] [vb infin] [adv] | 6 |
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3 | [Wh adv] often do [pers pn] [vb infin] [adv prt] | 5 |
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