No | Pattern | Freq | Relations |
---|---|---|---|
1 | been [verb] a | 2247 |
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2 | been [v-ing] a | 862 |
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3 | be operating a | 32 |
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4 | [be] operating a | 32 |
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5 | been operating [art] | 8 |
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6 | been operating [art] | 8 |
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7 | been operating a | 7 |
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8 | been operate a | 6 |
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9 | [been] operating a | 6 |
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