| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [adv] difficult [prep] [pers pn] [to-vb] | 15 |
|
| 2 | be [adv] difficult for [pers pn] [to-vb] | 15 |
|
| 3 | be [adv] difficult for [pers pn] [to-vb] | 15 |
|
| 4 | be [adv] difficult [prep] [pers pn] [to-vb] | 15 |
|
| 5 | be [adv] difficult [prep] [pers pn] [to-vb] | 15 |
|
| 6 | be very difficult [prep] [pers pn] [to-vb] | 9 |
|
| 7 | be very difficult [prep] [pers pn] [to-vb] | 9 |
|
| 8 | be [adv] difficult [prep] him [to-vb] | 5 |
|
