| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [verb] for many years | 63 |
|
| 2 | have been [vb pp] for many years | 50 |
|
| 3 | have been used for many [noun] | 13 |
|
| 4 | have been used for many [noun pl] | 13 |
|
| 5 | have been used for [adj] years | 12 |
|
| 6 | have been used for [det] years | 12 |
|
| 7 | have be used for many years | 11 |
|
| 8 | have [be] used for many years | 11 |
|
| 9 | [verb] been used for many years | 11 |
|
| 10 | have been used for many year | 11 |
|
| 11 | have been use for many years | 11 |
|
| 12 | have been used for many years | 11 |
|
| 13 | have been used for many years | 11 |
|
| 14 | have been used [prep] many years | 11 |
|
| 15 | have [been] used for many years | 11 |
|
| 16 | have been used [prep] many years | 11 |
|
