No | Pattern | Freq | Relations |
---|---|---|---|
1 | could [adv] be maintained | 14 |
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2 | could [adv] be maintain | 14 |
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3 | could [adv] be maintain | 14 |
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4 | could [not/n't] be maintain | 9 |
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5 | could not be maintain | 9 |
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6 | could not be maintain | 9 |
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7 | could [adv] be maintain | 5 |
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