| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun prp] have been suffering [prep] a | 9 |
|
| 2 | [noun prp] have been suffering from a | 7 |
|
| 3 | [noun prp] have been suffering from a | 7 |
|
| 4 | [noun prp] has been suffering [prep] a | 6 |
|
