No | Pattern | Freq | Relations |
---|---|---|---|
1 | have been [vb pp] in some [noun pl] | 52 | |
2 | has been [vb pp] in some [noun pl] | 29 | |
3 | have been [vb pp] in some [noun pl] | 12 | |
4 | have been [vb pp] in some cases | 8 | |
5 | have been [vb pp] in some quarters | 7 | |
6 | had been [vb pp] in some [noun pl] | 6 | |
7 | have been [vb pp] in some studies | 6 | |
8 | have been used in some [noun pl] | 5 | |
9 | have been [vb pp] in some patients | 5 | |
10 | have been found in some [noun pl] | 5 |