| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [v-ing] on [prep] [noun pl] | 33 |
|
| 2 | been [v-ing] on for [noun pl] | 29 |
|
| 3 | been going on [prep] [noun pl] | 29 |
|
| 4 | been [v-ing] on [prep] years | 15 |
|
