| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [adv] [been] think about | 10 |
|
| 2 | have [adv] be think about | 10 |
|
| 3 | have [adv] been think about | 10 |
|
| 4 | have [adv] [be] thinking about | 9 |
|
| 5 | have not [be] think about | 7 |
|
| 6 | have [not/n't] [be] think about | 7 |
|
| 7 | had [adv] [be] think about | 5 |
|
