No | Pattern | Freq | Relations |
---|---|---|---|
1 | could [not/n't] have been [verb] | 165 |
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2 | [modal v] [not/n't] have been [v-ing] | 73 |
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3 | [vb mod] [not/n't] have been [v-ing] | 73 |
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4 | could [adv] have been [v-ing] | 12 |
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5 | could [not/n't] have been [v-ing] | 6 |
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6 | could [not/n't] have [be] [v-ing] | 6 |
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7 | could [not/n't] have be [v-ing] | 6 |
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8 | could [not/n't] have [been] [v-ing] | 6 |
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9 | could [not/n't] [verb] been [v-ing] | 6 |
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