| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | difficult because [pers pn] [verb] | 25 |
|
| 2 | difficult because [pers pn] [vb past] | 11 |
|
| 3 | difficult because [pers pn] have | 10 |
|
| 4 | difficult because [pers pn] [vb base] | 9 |
|
| 5 | difficult because i [verb] | 9 |
|
| 6 | difficult because [pers pn] [vb -s] | 5 |
|
