| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not have [been] [prep] | 69 |
|
| 2 | have [been] available [prep] | 26 |
|
| 3 | not [been] available [prep] | 13 |
|
| 4 | not have [been] available | 12 |
|
