| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [v-ing] for [adv] | 41 |
|
| 2 | has been [v-ing] for [adv] | 31 |
|
| 3 | have been [v-ing] for [adv] | 24 |
|
| 4 | have been [v-ing] for about | 20 |
|
| 5 | have been [v-ing] for over | 16 |
|
| 6 | have been [v-ing] for so | 16 |
|
| 7 | have been [v-ing] for more | 14 |
|
| 8 | have been going for [adv] | 13 |
|
| 9 | have been waiting for [adv] | 13 |
|
| 10 | have been running for [adv] | 9 |
|
| 11 | have been [v-ing] for nearly | 8 |
|
| 12 | have been [v-ing] for ever | 8 |
|
| 13 | have been [v-ing] for almost | 7 |
|
| 14 | 've been [v-ing] for [adv] | 7 |
|
| 15 | have been operating for [adv] | 6 |
|
| 16 | 's been [v-ing] for [adv] | 6 |
|
| 17 | have been walking for [adv] | 6 |
|
| 18 | have been [v-ing] for only | 6 |
|
| 19 | 'd been [v-ing] for [adv] | 5 |
|
| 20 | have been [v-ing] for less | 5 |
|
