SN4 ""

No	Pattern	Freq
1	been [vb pp] for [det]	431
2	been [v-ing] for [det]	217
3	been [verb] for some	203
4	been [verb] for this	93
5	been [verb] for many	91
6	been [verb] for several	50
7	been use for [det]	37
8	been used for [det]	35
9	been [verb] for that	33
10	been [verb] for all	33
11	been known for [det]	32
12	been know for [det]	32
13	been wait for [det]	29
14	been waiting for [det]	29
15	been [verb] for more	21
16	been [verb] for any	17
17	been make for [det]	17
18	been made for [det]	16
19	been [verb] for such	16
20	been [verb] for these	15
21	been [verb] for those	15
22	been [verb] for another	14
23	been looking for [det]	12
24	been run for [det]	12
25	been ask for [det]	12
26	been look for [det]	12
27	been running for [det]	11
28	been [verb] for each	11
29	been prepare for [det]	10
30	been [verb] for most	10