| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been think [prep] | 47 |
|
| 2 | had [been] thinking [prep] | 38 |
|
| 3 | had [been] think of | 19 |
|
| 4 | had [been] think about | 16 |
|
| 5 | had [been] thought [prep] | 9 |
|
