| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it have been [v-ing] [adv prt] | 68 |
|
| 2 | it [vb -s] been [v-ing] [adv prt] | 60 |
|
| 3 | it 's been [v-ing] [adv prt] | 41 |
|
| 4 | it [verb] been [v-ing] on | 33 |
|
| 5 | it [verb] been going [adv prt] | 31 |
|
| 6 | it has been [v-ing] [adv prt] | 19 |
|
| 7 | it [verb] been [v-ing] up | 14 |
|
| 8 | it had been [v-ing] [adv prt] | 7 |
|
| 9 | it [vb past] been [v-ing] [adv prt] | 7 |
|
| 10 | it [verb] been building [adv prt] | 5 |
|
