| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [verb] for [adv] | 286 |
|
| 2 | have been [v-ing] for [adv] | 118 |
|
| 3 | have been operating [prep] [adv] | 7 |
|
| 4 | have been operating [prep] [adv] | 7 |
|
| 5 | have be operating for [adv] | 6 |
|
| 6 | have been operating for [adv] | 6 |
|
| 7 | have [be] operating for [adv] | 6 |
|
| 8 | have been operate for [adv] | 6 |
|
| 9 | [verb] been operating for [adv] | 6 |
|
| 10 | have [been] operating for [adv] | 6 |
|
| 11 | have been operating for [adv] | 6 |
|
