SN4 ""

No	Pattern	Freq
1	[adj] is [adv] what	348
2	[det] is [adv] what	339
3	this is [adv] what	179
4	this is [adv] what	179
5	that is [adv] what	160
6	that is [adv] what	160
7	[noun] is [adv] what	148
8	[noun sg] is [adv] what	126
9	[pron] is [adv] what	110
10	which is [adv] what	65
11	[Wh det] is [adv] what	65
12	which is [adv] what	65
13	[pers pn] is [adv] what	36
14	it is [adv] what	32
15	it is [adv] what	32
16	[noun pl] is [adv] what	14
17	[verb] is [adv] what	14
18	[conj] is [adv] what	13
19	that is [adv] what	8
20	[that] is [adv] what	8
21	that is [adv] what	8
22	[noun prp] is [adv] what	7
23	[indef pn] is [adv] what	7
24	[adj] is [adv] what	6
25	nothing is [adv] what	5
26	course is [adv] what	5
27	course is [adv] what	5
28	nothing is [adv] what	5
29	is [adv] [adv] what	92
30	is [not/n't] [adv] what	51