SN4 ""

No	Pattern	Freq
1	[to-vb] [det] problem	213
2	[to-vb] [det] problems	182
3	[to-vb] this problem	170
4	[to-vb] these problem	77
5	to overcome [det] problem	76
6	to solve [det] problem	54
7	[to-vb] any problem	49
8	to avoid [det] problem	28
9	[to-vb] that problem	27
10	to tackle [det] problem	26
11	[to-vb] such problem	22
12	to address [det] problem	22
13	[to-vb] those problem	14
14	to have [det] problem	14
15	[to-vb] some problem	11
16	to cause [det] problem	10
17	to resolve [det] problem	10
18	to present [det] problem	7
19	[to-vb] more problem	7
20	[to-vb] all problem	7
21	to consider [det] problem	6
22	to meet [det] problem	6
23	to alleviate [det] problem	6
24	to discuss [det] problem	6
25	to examine [det] problem	5
26	to handle [det] problem	5