SN4 ""

No	Pattern	Freq
1	[verb] the [det] problem	158
2	[prep] the [det] problem	87
3	[prep] the [det] problem	87
4	have the [det] problem	58
5	[vb base] the [det] problem	36
6	[adv] the [det] problem	33
7	[adv] the [det] problem	31
8	[vb past] the [det] problem	29
9	[vb infin] the [det] problem	28
10	face the [det] problem	27
11	of the [det] problem	23
12	of the [det] problem	23
13	[v-ing] the [det] problem	23
14	[vb -s] the [det] problem	21
15	had the [det] problem	18
16	with the [det] problem	18
17	with the [det] problem	18
18	exactly the [det] problem	15
19	exactly the [det] problem	15
20	to the [det] problem	15
21	to the [det] problem	15
22	have the [det] problem	13
23	have the [det] problem	13
24	[to-vb] the [det] problem	11
25	[vb pp] the [det] problem	10
26	face the [det] problem	9
27	experience the [det] problem	9
28	[be] the [det] problem	9
29	be the [det] problem	9
30	[is] the [det] problem	7