| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [v-ing] for [adj] years | 44 |
|
| 2 | had been [v-ing] for [det] years | 19 |
|
| 3 | had been [verb] for many years | 18 |
|
| 4 | have been [v-ing] for many years | 13 |
|
| 5 | [verb] been [v-ing] for many years | 13 |
|
| 6 | had been [v-ing] for many [noun pl] | 8 |
|
| 7 | had been [v-ing] for many [noun] | 8 |
|
| 8 | [vb past] been [v-ing] for many years | 7 |
|
| 9 | had [been] [v-ing] for many years | 7 |
|
| 10 | had [be] [v-ing] for many years | 7 |
|
| 11 | had been [v-ing] [prep] many years | 7 |
|
| 12 | had been [v-ing] for many years | 7 |
|
| 13 | had been [v-ing] [prep] many years | 7 |
|
| 14 | had been [v-ing] for many years | 7 |
|
| 15 | had been [v-ing] for many year | 7 |
|
| 16 | had be [v-ing] for many years | 7 |
|
