| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | patient who had [vb pp] [adj] | 28 |
|
| 2 | patients who had [vb pp] [adj] | 28 |
|
| 3 | patient who had [vb pp] [adj] | 21 |
|
| 4 | patient who had undergone [adj] | 10 |
|
| 5 | patient who had had [adj] | 9 |
|
| 6 | patient who had [vb pp] previous | 5 |
|
| 7 | patient who had [vb pp] previous | 5 |
|
