| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] have a history | 24 |
|
| 2 | [noun pl] [vb base] a history | 18 |
|
| 3 | [noun pl] have a history | 14 |
|
| 4 | [noun pl] [vb past] a history | 11 |
|
| 5 | [noun pl] had a history | 10 |
|
| 6 | patients [verb] a history | 7 |
|
