SN4 ""

No	Pattern	Freq
1	[Wh det] [pers pn] have been doing	147
2	what [pers pn] have been doing	138
3	what [pers pn] have been doing	138
4	[pron] [pers pn] 've been doing	75
5	[pron] you have been doing	37
6	[pron] i have been doing	36
7	[pron] [pers pn] had been doing	33
8	[pron] he have been doing	26
9	[pron] we have been doing	26
10	[pron] [pers pn] 'd been doing	22
11	[pron] they have been doing	20
12	[pron] [pers pn] have been doing	18
13	[pron] she have been doing	13
14	[indef pn] [pers pn] have been doing	11
15	[pron] [pers pn] 's been doing	10
16	everything [pers pn] have been doing	5
17	everything [pers pn] have been doing	5
18	which [pers pn] have been doing	5
19	which [pers pn] have been doing	5