SN4 ""

No	Pattern	Freq
1	[pron] [pers pn] have been doing for	11
2	[conj] [pers pn] have been doing for	10
3	what [pers pn] have been doing for	10
4	[Wh det] [pers pn] have been doing for	10
5	what [pers pn] have been doing for	10
6	[subord] [pers pn] have been doing for	6
7	as [pers pn] have been doing for	5
8	as [pers pn] have been doing for	5
9	[pers pn] have been doing [pron] for	28
10	[pers pn] have been doing it for	27
11	[pers pn] have been doing [pers pn] for	27
12	[pers pn] have been doing it for	27
13	[pers pn] have been doing [det] for	23
14	[pers pn] have been doing [adj] for	23
15	[pers pn] have been doing this for	11
16	[pers pn] have been doing this for	11
17	[pers pn] have been doing that for	9
18	[pers pn] have been doing that for	9
19	[pers pn] have been doing [adv] for	5
20	[pers pn] have been doing [adv] for	5
21	[pers pn] have been doing for [art]	14
22	[pers pn] have been doing for [art]	14
23	[pers pn] have been doing for the	13
24	[pers pn] have been doing for the	13