SN4 ""

No	Pattern	Freq
1	[prep] [Wh det] is for	10
2	[noun] [Wh det] is for	10
3	[prep] [Wh det] is for	10
4	[noun sg] [Wh det] is for	8
5	[verb] [Wh det] is for	7
6	[Wh det] [pron] is for	46
7	[Wh det] [pers pn] is for	43
8	[Wh det] it is for	41
9	[Wh det] it is for	41
10	[Wh det] [noun] is for	14
11	[Wh det] [noun sg] is for	13
12	[Wh det] is [adj] for	573
13	[Wh det] is [adj] for	507
14	[Wh det] is [verb] for	219
15	[Wh det] is [vb pp] for	189
16	[Wh det] is good for	98
17	[Wh det] is responsible for	78
18	[Wh det] is responsible for	78
19	[Wh det] is [adj -est] for	60
20	[Wh det] is best for	59
21	[Wh det] is good for	38
22	[Wh det] is necessary for	29
23	[Wh det] is necessary for	29
24	[Wh det] is used for	28
25	[Wh det] is use for	28
26	[Wh det] is appropriate for	27
27	[Wh det] is appropriate for	27
28	[Wh det] is [pron] for	27
29	[Wh det] is [adv] for	26
30	[Wh det] is [v-ing] for	25