| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [v-ing] for some [noun] | 37 |
|
| 2 | had been [v-ing] for [det] [noun sg] | 32 |
|
| 3 | had been [v-ing] for [det] [noun pl] | 32 |
|
| 4 | had been [v-ing] for [det] time | 22 |
|
| 5 | had been [v-ing] for [det] time | 22 |
|
| 6 | had been [v-ing] for [det] year | 19 |
|
| 7 | had been [v-ing] for [det] years | 19 |
|
| 8 | had been [v-ing] for several [noun] | 10 |
|
| 9 | had been [v-ing] for many [noun] | 8 |
|
| 10 | had been waiting for [det] [noun] | 7 |
|
| 11 | had been [v-ing] for this [noun] | 6 |
|
