| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had be [v-ing] on for [noun pl] | 7 |
|
| 2 | had been [v-ing] on for [noun] | 7 |
|
| 3 | had be [v-ing] on for [noun] | 7 |
|
| 4 | had be going on for [noun] | 6 |
|
