| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] problems [am/are] [vb pp] by the | 10 |
|
| 2 | [det] problems [am/are] [vb pp] by the | 5 |
|
| 3 | these problems [am/are] [vb pp] by the | 5 |
|
| 4 | these problems [am/are] [vb pp] by the | 5 |
|
| 5 | problems [am/are] [vb pp] by the [noun] | 13 |
|
| 6 | problems [am/are] [vb pp] by the [noun sg] | 11 |
|
