| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] [v-ing] [adv prt] [prep] | 635 |
|
| 2 | it have [been] [v-ing] [prep] | 131 |
|
| 3 | it have [been] [v-ing] [adv prt] | 68 |
|
| 4 | it have [been] [adv prt] [prep] | 38 |
|
