SN4 ""

No	Pattern	Freq
1	[noun] [conj] [pron] have been at	22
2	[adv] [conj] [pron] have been at	22
3	[adj] [conj] [pron] have been at	21
4	[verb] [conj] [pron] have been at	19
5	[noun sg] [conj] [pron] have been at	18
6	[adv] [conj] [pron] have been at	17
7	[adj] [conj] [pron] have been at	12
8	[vb pp] [conj] [pron] have been at	6
9	[conj] [conj] [pron] have been at	5
10	[vb past] [conj] [pron] have been at	5
11	[conj] [conj] [pron] have been at	5
12	[conj] [noun] [pron] have been at	5
13	[conj] [pron] [modal v] have been at	17
14	[conj] [pron] [vb mod] have been at	17
15	[conj] [pron] [noun] have been at	5
16	[conj] [pron] have [adv] been at	16
17	[conj] [pron] have [not/n't] been at	10
18	[conj] [pron] have not been at	10
19	[conj] [pron] have [adv] been at	6
20	[conj] [pron] have n't been at	6
21	[conj] [pron] have been [verb] at	123
22	[conj] [pron] have been [vb pp] at	76
23	[conj] [pron] have been [v-ing] at	47
24	[conj] [pron] have been [adj] at	21
25	[conj] [pron] have been [adj] at	19
26	[conj] [pron] have been [adv] at	16
27	[conj] [pron] have been looking at	12
28	[conj] [pron] have been look at	12
29	[conj] [pron] have been [adv] at	9
30	[conj] [pron] have been work at	7