SN4 ""

No	Pattern	Freq
1	who have been [v-ing] [prep]	332
2	who [verb] been [v-ing] [prep]	332
3	who [vb past] been [v-ing] [prep]	177
4	who had been [v-ing] [prep]	160
5	who [vb -s] been [v-ing] [prep]	90
6	who [verb] been [v-ing] for	83
7	who has been [v-ing] [prep]	69
8	who [verb] been [v-ing] in	68
9	who [vb base] been [v-ing] [prep]	65
10	who have been [v-ing] [prep]	57
11	who [verb] been [v-ing] on	38
12	who [verb] been [v-ing] with	31
13	who [verb] been working [prep]	29
14	who [verb] been [v-ing] to	23
15	who [verb] been living [prep]	21
16	who 's been [v-ing] [prep]	21
17	who [verb] been missing [prep]	20
18	who [verb] been looking [prep]	17
19	who 'd been [v-ing] [prep]	17
20	who [verb] been waiting [prep]	15
21	who [verb] been [v-ing] at	14
22	who [verb] been [v-ing] from	11
23	who [verb] been sitting [prep]	10
24	who [verb] been [v-ing] as	9
25	who [verb] been standing [prep]	9
26	who 've been [v-ing] [prep]	8
27	who [verb] been [v-ing] after	8
28	who [verb] been staying [prep]	7
29	who [verb] been campaigning [prep]	7
30	who [verb] been acting [prep]	7