SN4 ""

No	Pattern	Freq
1	[conj] [pers pn] have been the [noun]	92
2	[subord] [pers pn] have been the [noun]	42
3	[noun] [pers pn] have been the [noun]	36
4	that [pers pn] have been the [noun]	33
5	[that] [pers pn] have been the [noun]	33
6	that [pers pn] have been the [noun]	33
7	[noun sg] [pers pn] have been the [noun]	25
8	[adv] [pers pn] have been the [noun]	24
9	[adv] [pers pn] have been the [noun]	19
10	[coord] [pers pn] have been the [noun]	17
11	if [pers pn] have been the [noun]	15
12	if [pers pn] have been the [noun]	15
13	[verb] [pers pn] have been the [noun]	13
14	and [pers pn] have been the [noun]	10
15	and [pers pn] have been the [noun]	10
16	[prep] [pers pn] have been the [noun]	9
17	[noun pl] [pers pn] have been the [noun]	9
18	[prep] [pers pn] have been the [noun]	9
19	[pron] [pers pn] have been the [noun]	7
20	[adj] [pers pn] have been the [noun]	6
21	but [pers pn] have been the [noun]	6
22	but [pers pn] have been the [noun]	6
23	years [pers pn] have been the [noun]	6
24	[vb past] [pers pn] have been the [noun]	6
25	year [pers pn] have been the [noun]	6
26	because [pers pn] have been the [noun]	5
27	because [pers pn] have been the [noun]	5
28	[pers pn] [vb mod] have been the [noun]	141
29	[pers pn] [modal v] have been the [noun]	141
30	[pers pn] must have been the [noun]	37