SN4 ""

No	Pattern	Freq
1	[conj] it become	1066
2	[subord] it become	657
3	[conj] it became	642
4	[conj] it becomes	417
5	[coord] it become	244
6	when it become	210
7	when it become	210
8	and it become	191
9	and it become	191
10	that it become	165
11	[that] it become	165
12	that it become	165
13	as it become	124
14	as it become	124
15	before it become	72
16	before it become	72
17	if it become	69
18	if it become	69
19	until it become	59
20	until it become	59
21	but it become	49
22	but it become	49
23	once it become	27
24	once it become	27
25	because it become	16
26	because it become	16
27	so it become	16
28	so it become	16
29	after it become	15
30	after it become	15