SN4 ""

No	Pattern	Freq
1	[noun] [prep] this is [conj]	316
2	[noun sg] [prep] this is [conj]	300
3	reason [prep] this is [conj]	100
4	reason [prep] this is [conj]	95
5	[verb] [prep] this is [conj]	31
6	consequence [prep] this is [conj]	24
7	consequence [prep] this is [conj]	24
8	implication [prep] this is [conj]	18
9	implication [prep] this is [conj]	17
10	[noun pl] [prep] this is [conj]	16
11	result [prep] this is [conj]	13
12	advantage [prep] this is [conj]	13
13	result [prep] this is [conj]	13
14	advantage [prep] this is [conj]	13
15	problem [prep] this is [conj]	12
16	problem [prep] this is [conj]	11
17	[adj] [prep] this is [conj]	11
18	corollary [prep] this is [conj]	11
19	corollary [prep] this is [conj]	11
20	effect [prep] this is [conj]	9
21	[vb base] [prep] this is [conj]	8
22	explanation [prep] this is [conj]	8
23	[vb pp] [prep] this is [conj]	8
24	effect [prep] this is [conj]	8
25	[adj] [prep] this is [conj]	8
26	explanation [prep] this is [conj]	8
27	significance [prep] this is [conj]	7
28	significance [prep] this is [conj]	7
29	[adv] [prep] this is [conj]	7
30	difficulty [prep] this is [conj]	6