| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it have [adv] [been] [v-ing] | 27 |
|
| 2 | it have [adv] been [v-ing] | 27 |
|
| 3 | it have [adv] [been] [v-ing] | 21 |
|
| 4 | it has [adv] [been] [v-ing] | 14 |
|
| 5 | it had [adv] [been] [v-ing] | 11 |
|
| 6 | it have not [been] [v-ing] | 6 |
|
| 7 | it have [not/n't] [been] [v-ing] | 6 |
|
| 8 | it have [adv] [been] going | 5 |
|
| 9 | it have n't [been] [v-ing] | 5 |
|
| 10 | it have [adv] [been] raining | 5 |
|
