SN4 ""

No	Pattern	Freq
1	[verb] is whether	155
2	[vb pp] is [subord]	99
3	[verb] is if	75
4	[to-vb] is [subord]	61
5	[verb] is because	48
6	[vb infin] is [subord]	48
7	[vb -s] is [subord]	47
8	[v-ing] is [subord]	35
9	[verb] is as	34
10	do is [subord]	30
11	ask is [subord]	28
12	[vb base] is [subord]	26
13	say is [subord]	22
14	arise is [subord]	18
15	consider is [subord]	18
16	arises is [subord]	15
17	happen is [subord]	12
18	know is [subord]	12
19	asked is [subord]	10
20	make is [subord]	10
21	considered is [subord]	10
22	answer is [subord]	9
23	saying is [subord]	9
24	[vb past] is [subord]	9
25	to do is [subord]	9
26	do is [subord]	9
27	to know is [subord]	8
28	decide is [subord]	8
29	matters is [subord]	7
30	matter is [subord]	7