No | Pattern | Freq | Relations |
---|---|---|---|
1 | it [was/were] become [adv] difficult | 8 |
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2 | it [was/were] become [adv] difficult | 8 |
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3 | it [was/were] become increasingly difficult | 6 |
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4 | it [was/were] become increasingly difficult | 6 |
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5 | it [was/were] become difficult [verb] | 5 |
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6 | it [was/were] become difficult [to-vb] | 5 |
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