| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [v-ing] for [noun] | 81 |
|
| 2 | [verb] been [v-ing] for years | 79 |
|
| 3 | have been [v-ing] for years | 79 |
|
| 4 | had been [v-ing] for [noun pl] | 42 |
|
| 5 | had been [verb] for years | 28 |
|
| 6 | [vb past] been [v-ing] for years | 19 |
|
| 7 | had been [v-ing] for year | 18 |
|
| 8 | had been [v-ing] [prep] years | 18 |
|
| 9 | had [been] [v-ing] for years | 18 |
|
| 10 | had [be] [v-ing] for years | 18 |
|
| 11 | had be [v-ing] for years | 18 |
|
