| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] been responsible for | 5 |
|
| 2 | [v-ing] [been] responsible for | 5 |
|
| 3 | [v-ing] be responsible for | 5 |
|
| 4 | having [be] responsible for | 5 |
|
