No | Pattern | Freq | Relations |
---|---|---|---|
1 | have been [v-ing] for several [noun pl] | 24 |
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2 | have been [v-ing] [prep] several years | 14 |
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3 | had been [v-ing] [prep] several [noun pl] | 10 |
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4 | has been [v-ing] [prep] several [noun pl] | 6 |
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5 | have been running [prep] several [noun pl] | 5 |
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