No | Pattern | Freq | Relations |
---|---|---|---|
1 | how difficult it is [prep] | 21 | |
2 | how difficult it is [prep] | 21 | |
3 | how difficult it is [prep] | 21 | |
4 | how difficult it is [prep] | 21 | |
5 | how difficult it is for | 17 | |
6 | how difficult it is for | 17 |
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