| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] now been [verb] | 716 |
|
| 2 | [vb -s] now been [vb pp] | 706 |
|
| 3 | [vb -s] [adv] been introduced | 39 |
|
| 4 | [vb -s] [adv] been introduced | 35 |
|
| 5 | [verb] now been introduced | 12 |
|
| 6 | [vb -s] now [been] introduced | 7 |
|
| 7 | [vb -s] now [be] introduced | 7 |
|
| 8 | [vb -s] now been introduce | 7 |
|
| 9 | [vb -s] now been introduced | 7 |
|
| 10 | [vb -s] now be introduced | 7 |
|
