| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [verb] [adv] [prep] | 850 |
|
| 2 | had been [v-ing] [adv] [prep] | 199 |
|
| 3 | have been doing [adv] [prep] | 21 |
|
| 4 | [verb] been doing [adv] [prep] | 21 |
|
| 5 | had been do [adv] [prep] | 14 |
|
| 6 | [vb past] been doing [adv] [prep] | 6 |
|
| 7 | had [be] doing [adv] [prep] | 6 |
|
| 8 | had be doing [adv] [prep] | 6 |
|
| 9 | had been doing [adv] [prep] | 6 |
|
| 10 | had been doing [adv] [prep] | 6 |
|
| 11 | had [been] doing [adv] [prep] | 6 |
|
