| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [prep] [be] responsible for | 20 |
|
| 2 | [be] [v-ing] [prep] [be] for | 15 |
|
| 3 | [v-ing] [prep] [be] responsible for | 10 |
|
| 4 | [be] [v-ing] [prep] [be] responsible | 10 |
|
