| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] have a history of | 19 |
|
| 2 | [noun pl] had a history [prep] | 10 |
|
| 3 | [noun pl] have a history [prep] | 9 |
|
| 4 | patients have a history [prep] | 7 |
|
