SN4 ""

No	Pattern	Freq
1	[noun] [pers pn] have been [v-ing] [det]	30
2	[noun sg] [pron] have been [v-ing] [det]	27
3	[noun pl] [pron] have been [v-ing] [det]	19
4	[noun] [pron] had been [v-ing] [det]	19
5	[noun] [pron] have been [v-ing] all	16
6	[noun] [pron] have been [v-ing] this	14
7	[noun] who have been [v-ing] [det]	13
8	[noun] [Wh pn] have been [v-ing] [det]	13
9	[noun] who have been [v-ing] [det]	13
10	[noun] [pron] 've been [v-ing] [det]	11
11	[noun] [pron] have been doing [det]	9
12	[noun] he have been [v-ing] [det]	8
13	[noun] he have been [v-ing] [det]	8
14	[noun] [pron] has been [v-ing] [det]	7
15	[noun] we have been [v-ing] [det]	7
16	[noun] [Wh det] have been [v-ing] [det]	7
17	[noun] which have been [v-ing] [det]	7
18	[noun] which have been [v-ing] [det]	7
19	[noun] [pron] have been [v-ing] some	7
20	[noun] we have been [v-ing] [det]	7
21	[noun] [pron] 'd been [v-ing] [det]	6
22	[noun] [pron] have been [v-ing] [det]	6
23	[noun] i have been [v-ing] [det]	5
24	[noun] i have been [v-ing] [det]	5