No | Pattern | Freq | Relations |
---|---|---|---|
1 | over a [adj] period | 462 |
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2 | over a long period | 181 |
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3 | over an [adj] period | 26 |
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4 | over a five-year period | 25 |
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5 | over a three-year period | 24 |
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6 | over a two-year period | 15 |
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7 | over a prolonged period | 15 |
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8 | over a short period | 14 |
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9 | over a extended period | 12 |
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10 | over a given period | 12 |
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11 | over a 10-year period | 8 |
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12 | over a four-year period | 8 |
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13 | over a 24-hour period | 7 |
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14 | over a six-month period | 7 |
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15 | over a lengthy period | 7 |
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16 | over a considerable period | 7 |
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17 | over a six-year period | 6 |
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18 | over a seven-year period | 5 |
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19 | over a ten-year period | 5 |
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20 | over a sustained period | 5 |
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