SN4 ""

No	Pattern	Freq
1	[conj] [pron] is [prep] [pron]	327
2	[subord] [pron] is [prep] [pron]	186
3	[adj] [pron] is [prep] [pron]	141
4	[noun] [pron] is [prep] [pron]	119
5	[noun sg] [pron] is [prep] [pron]	98
6	[coord] [pron] is [prep] [pron]	91
7	[verb] [pron] is [prep] [pron]	89
8	[adv] [pron] is [prep] [pron]	83
9	as [pron] is [prep] [pron]	78
10	as [pron] is [prep] [pron]	78
11	[det] [pron] is [prep] [pron]	70
12	all [pron] is [prep] [pron]	63
13	[adv] [pron] is [prep] [pron]	63
14	all [pron] is [prep] [pron]	63
15	[pron] [pron] is [prep] [pron]	58
16	[adj] [pron] is [prep] [pron]	57
17	and [pron] is [prep] [pron]	56
18	and [pron] is [prep] [pron]	56
19	[prep] [pron] is [prep] [pron]	52
20	[prep] [pron] is [prep] [pron]	52
21	that [pron] is [prep] [pron]	50
22	that [pron] is [prep] [pron]	50
23	[that] [pron] is [prep] [pron]	50
24	[Wh det] [pron] is [prep] [pron]	39
25	what [pron] is [prep] [pron]	36
26	what [pron] is [prep] [pron]	36
27	but [pron] is [prep] [pron]	34
28	but [pron] is [prep] [pron]	34
29	than [pron] is [prep] [pron]	29
30	than [pron] is [prep] [pron]	29