SN4 ""

No	Pattern	Freq
1	[noun] is [adv] [vb pp] [subord]	605
2	[noun sg] is [adv] [verb] [subord]	543
3	[noun] is [adv] [verb] as	307
4	[noun] is [adv] [verb] when	105
5	[noun] is [adv] [verb] because	70
6	[noun] is [adv] [verb] if	62
7	[noun prp] is [adv] [verb] [subord]	54
8	[noun] is often [verb] [subord]	51
9	[noun] is [adv] see [subord]	51
10	[noun] is [adv] seen [subord]	49
11	[noun pl] is [adv] [verb] [subord]	44
12	[noun] is also [verb] [subord]	39
13	[noun] is only [verb] [subord]	39
14	[noun] is usually [verb] [subord]	34
15	[noun] is [adv] regard [subord]	34
16	[noun] is [adv] regarded [subord]	34
17	[noun] is [adv] [v-ing] [subord]	30
18	[noun] is now [verb] [subord]	29
19	[noun] is [adv] described [subord]	24
20	[noun] is [adv] describe [subord]	24
21	[noun] is best [verb] [subord]	22
22	[noun] is widely [verb] [subord]	22
23	[noun] is better [verb] [subord]	19
24	[noun] is [adv] [verb] where	17
25	[noun] is [adv] [verb] than	17
26	[noun] is sometimes [verb] [subord]	17
27	[noun] is [adv] [verb] whether	17
28	[noun] is then [verb] [subord]	17
29	[noun] is generally [verb] [subord]	17
30	[noun] is still [verb] [subord]	16