SN4 ""

No	Pattern	Freq
1	[noun] have been [v-ing] for [det]	57
2	[noun sg] have been [v-ing] [prep] [det]	55
3	[noun] had been [v-ing] [prep] [det]	54
4	[noun] has been [v-ing] [prep] [det]	48
5	[noun] have been [v-ing] [prep] some	41
6	[noun prp] have been [v-ing] [prep] [det]	40
7	[noun pl] have been [v-ing] [prep] [det]	28
8	[noun] have been [v-ing] [prep] this	26
9	[noun] have been [v-ing] [prep] [det]	22
10	[noun] have been [v-ing] in [det]	15
11	[noun] have been [v-ing] on [det]	11
12	[noun] have been working [prep] [det]	10
13	[noun] have been [v-ing] [prep] these	10
14	[noun] have been [v-ing] with [det]	9
15	[noun] have been [v-ing] [prep] all	9
16	[noun] have been [v-ing] [prep] several	8
17	[noun] have been going [prep] [det]	6
18	[noun] have been [v-ing] [prep] more	6
19	[noun] have been [v-ing] at [det]	6
20	[noun] have been [v-ing] [prep] such	6
21	[noun] have been [v-ing] [prep] many	5
22	[noun] have been looking [prep] [det]	5
23	[noun] have been [v-ing] to [det]	5