| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [v-ing] responsibility for | 14 |
|
| 2 | [be] taking responsibility for | 11 |
|
| 3 | [am/are] [v-ing] responsibility for | 6 |
|
| 4 | [is] [v-ing] responsibility for | 5 |
|
