SN4 ""

No	Pattern	Freq
1	[Wh det] is [verb] for	219
2	[Wh det] is [vb pp] for	189
3	which is [verb] for	178
4	what is [verb] for	40
5	[Wh det] is used for	28
6	[Wh det] is use for	28
7	[Wh det] is [v-ing] for	25
8	[Wh det] is require for	18
9	[Wh det] is required for	18
10	[Wh det] is need for	10
11	[Wh det] is needed for	10
12	[Wh det] is elected for	9
13	[Wh det] is elect for	9
14	[Wh det] is design for	8
15	[Wh det] is designed for	8
16	[Wh det] is schedule for	7
17	[Wh det] is scheduled for	7
18	[Wh det] is plan for	6
19	[Wh det] is planned for	6
20	[Wh det] is paid for	5
21	[Wh det] is [to-vb] for	5
22	[Wh det] is look for	5
23	[Wh det] is reserved for	5
24	[Wh det] is taken for	5
25	[Wh det] is take for	5
26	[Wh det] is reserve for	5
27	[Wh det] is pay for	5