SN4 ""

No	Pattern	Freq
1	[noun] about what [modal v]	97
2	[noun pl] about what [modal v]	49
3	[noun sg] about what [modal v]	47
4	[verb] about what [modal v]	45
5	[adj] about what [modal v]	27
6	[adj] about what [modal v]	25
7	think about what [modal v]	16
8	[to-vb] about what [modal v]	12
9	[v-ing] about what [modal v]	12
10	[adv] about what [modal v]	10
11	[adv] about what [modal v]	10
12	idea about what [modal v]	7
13	worried about what [modal v]	7
14	worried about what [modal v]	7
15	[vb base] about what [modal v]	7
16	view about what [modal v]	6
17	[vb pp] about what [modal v]	6
18	ideas about what [modal v]	6
19	talk about what [modal v]	6
20	[vb infin] about what [modal v]	6
21	to think about what [modal v]	6
22	concerned about what [modal v]	5
23	concerned about what [modal v]	5
24	concern about what [modal v]	5
25	about what [pron] [modal v]	164
26	about what [pers pn] [modal v]	160
27	about what [noun] [modal v]	52
28	about what they [modal v]	38
29	about what they [modal v]	38
30	about what we [modal v]	31