| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [adv] used [prep] | 72 |
|
| 2 | been [adv] used in | 31 |
|
| 3 | been widely used [prep] | 28 |
|
| 4 | been widely used [prep] | 28 |
|
| 5 | been [adv] used for | 12 |
|
| 6 | been [adv] used by | 10 |
|
| 7 | been successfully used [prep] | 9 |
|
| 8 | been successfully used [prep] | 9 |
|
| 9 | been much used [prep] | 6 |
|
| 10 | been extensively used [prep] | 6 |
|
| 11 | been extensively used [prep] | 6 |
|
| 12 | been much used [prep] | 6 |
|
| 13 | been [adv] used on | 5 |
|
| 14 | been [adv] used as | 5 |
|
