SN4 ""

No	Pattern	Freq
1	[conj] [pers pn] have become	508
2	[noun] [pers pn] have become	226
3	[subord] [pers pn] have become	224
4	that [pers pn] have become	158
5	that [pers pn] have become	158
6	[that] [pers pn] have become	158
7	[noun sg] [pers pn] have become	130
8	[adv] [pers pn] have become	128
9	[coord] [pers pn] have become	126
10	[adv] [pers pn] have become	97
11	[verb] [pers pn] have become	96
12	[pron] [pers pn] have become	87
13	and [pers pn] have become	78
14	and [pers pn] have become	78
15	[noun pl] [pers pn] have become	78
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	[num] [pers pn] have become	45
23	as [pers pn] have become	44
24	as [pers pn] have become	44
25	which [pers pn] have become	43
26	which [pers pn] have become	43
27	year [pers pn] have become	36
28	years [pers pn] have become	34
29	[vb past] [pers pn] have become	33
30	[prep] [pers pn] have become	32