| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has [been] [v-ing] [adv prt] [prep] | 159 |
|
| 2 | this has [been] [v-ing] [adv prt] | 10 |
|
| 3 | this has [been] [v-ing] [prep] | 6 |
|
