| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] [adv] for [noun pl] | 13 |
|
| 2 | have been [v-ing] [adv prt] [prep] [noun pl] | 12 |
|
| 3 | have been [v-ing] [adv] [prep] [noun pl] | 11 |
|
| 4 | have been [v-ing] [adv] [prep] years | 7 |
|
