| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must have [been] think [prep] | 8 |
|
| 2 | must have [be] think [prep] | 8 |
|
| 3 | must have be think [prep] | 8 |
|
| 4 | must have [be] think [prep] | 8 |
|
| 5 | must have been think [prep] | 8 |
|
| 6 | must have [be] thinking [prep] | 7 |
|
| 7 | must have [be] think of | 5 |
|
| 8 | must have [be] think of | 5 |
|
