No | Pattern | Freq | Relations |
---|---|---|---|
1 | [prep] least three years [unc] | 5 |
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2 | at least three years [unc] | 5 |
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3 | at least three years [unc] | 5 |
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4 | [prep] least three years ['s] | 5 |
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5 | [prep] least three years ' | 5 |
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6 | [prep] least three years ' | 5 |
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