SN4 ""

No	Pattern	Freq
1	it became [adj]	859
2	it becomes [adj]	472
3	it become clear	385
4	it become apparent	165
5	it become possible	90
6	it become obvious	85
7	it become necessary	63
8	it become evident	60
9	it become difficult	33
10	it become available	26
11	it become impossible	23
12	it become [adj]	21
13	it become important	17
14	it become common	14
15	it become fashionable	13
16	it to become [adj]	13
17	it become [adj]	12
18	it becoming [adj]	8
19	it become illegal	7
20	it become hard	7
21	it become plain	6
22	it become independent	6
23	it become stuck	5
24	it become insolvent	5
25	it become essential	5
26	it become effective	5
27	it become inevitable	5
28	it become public	5