SN4 ""

No	Pattern	Freq
1	[conj] [pers pn] have become	512
2	[noun] [pers pn] have become	230
3	[subord] [pers pn] have become	226
4	that [pers pn] have become	159
5	[that] [pers pn] have become	159
6	that [pers pn] have become	159
7	[noun sg] [pers pn] have become	132
8	[adv] [pers pn] have become	130
9	[coord] [pers pn] have become	127
10	[adv] [pers pn] have become	99
11	[verb] [pers pn] have become	99
12	[pron] [pers pn] have become	87
13	[noun pl] [pers pn] have become	80
14	and [pers pn] have become	79
15	and [pers pn] have become	79
16	[adj] [pers pn] have become	77
17	[Wh det] [pers pn] have become	70
18	because [pers pn] have become	53
19	because [pers pn] have become	53
20	but [pers pn] have become	46
21	but [pers pn] have become	46
22	as [pers pn] have become	45
23	as [pers pn] have become	45
24	[num] [pers pn] have become	45
25	which [pers pn] have become	43
26	which [pers pn] have become	43
27	year [pers pn] have become	37
28	years [pers pn] have become	35
29	[vb past] [pers pn] have become	34
30	[prep] [pers pn] have become	32