No | Pattern | Freq | Relations |
---|---|---|---|
1 | has been [verb] for [adv] | 88 |
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2 | has been [v-ing] for [adv] | 31 |
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3 | [verb] been operating for [adv] | 6 |
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4 | have been operating for [adv] | 6 |
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5 | has been operate for [adv] | 5 |
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6 | has been operating [prep] [adv] | 5 |
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7 | has [be] operating for [adv] | 5 |
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8 | has be operating for [adv] | 5 |
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9 | [vb -s] been operating for [adv] | 5 |
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10 | has been operating for [adv] | 5 |
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11 | has [been] operating for [adv] | 5 |
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