| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [been] used [adv] for | 16 |
|
| 2 | [been] used [adv] for | 16 |
|
| 3 | [been] used [verb] for | 5 |
|
| 4 | [been] used [to-vb] for | 5 |
|
| 5 | [verb] [been] used for | 195 |
|
| 6 | have [been] used for | 195 |
|
| 7 | [vb -s] [been] used for | 69 |
|
| 8 | has [been] used for | 62 |
|
| 9 | [vb base] [been] used for | 54 |
|
| 10 | have [been] used for | 53 |
|
| 11 | [adv] [been] used for | 49 |
|
| 12 | [vb past] [been] used for | 36 |
|
| 13 | had [been] used for | 36 |
|
| 14 | [adv] [been] used for | 32 |
|
| 15 | have [been] used for | 23 |
|
| 16 | [vb infin] [been] used for | 23 |
|
| 17 | [not/n't] [been] used for | 17 |
|
| 18 | not [been] used for | 17 |
|
| 19 | not [been] used for | 12 |
|
| 20 | to have [been] used for | 10 |
|
| 21 | [to-vb] [been] used for | 10 |
|
| 22 | 's [been] used for | 7 |
|
| 23 | only [been] used for | 5 |
|
| 24 | never [been] used for | 5 |
|
| 25 | n't [been] used for | 5 |
|
| 26 | only [been] used for | 5 |
|
| 27 | never [been] used for | 5 |
|
| 28 | [been] [adv] used for | 12 |
|
| 29 | [been] [adv] used for | 12 |
|
| 30 | [been] widely used for | 7 |
|
