| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [v-ing] for [adj] years | 44 |
|
| 2 | had been [v-ing] for [num] years | 25 |
|
| 3 | have been [v-ing] for two years | 11 |
|
| 4 | [verb] been [v-ing] for two years | 11 |
|
| 5 | had been [v-ing] for two [noun pl] | 7 |
|
| 6 | had been [v-ing] for two [noun] | 7 |
|
| 7 | had been [verb] for two years | 7 |
|
| 8 | had been [v-ing] [prep] two years | 6 |
|
| 9 | [vb past] been [v-ing] for two years | 6 |
|
| 10 | had been [v-ing] for two years | 6 |
|
| 11 | had been [v-ing] for two year | 6 |
|
| 12 | had [been] [v-ing] for two years | 6 |
|
| 13 | had [be] [v-ing] for two years | 6 |
|
| 14 | had be [v-ing] for two years | 6 |
|
| 15 | had been [v-ing] [prep] two years | 6 |
|
| 16 | had been [v-ing] for two years | 6 |
|
