SN4 ""

No	Pattern	Freq
1	[subord] [det] is [verb]	669
2	[subord] [adj] is [vb pp]	611
3	[subord] this is [verb]	458
4	[subord] this is [verb]	458
5	if [adj] is [verb]	243
6	when [adj] is [verb]	120
7	[subord] [adj] is do	111
8	[subord] [adj] is done	108
9	[subord] that is [verb]	101
10	[subord] that is [verb]	101
11	[subord] [adj] is [v-ing]	81
12	as [adj] is [verb]	72
13	[subord] [adj] is [verb]	45
14	where [adj] is [verb]	40
15	[subord] [adj] is [to-vb]	36
16	[subord] all is [verb]	34
17	[subord] all is [verb]	34
18	once [adj] is [verb]	33
19	although [adj] is [verb]	33
20	whether [adj] is [verb]	30
21	[subord] [adj] is say	27
22	[subord] [adj] is go	27
23	[subord] [adj] is said	26
24	[subord] [adj] is going	26
25	until [adj] is [verb]	26
26	while [adj] is [verb]	25
27	unless [adj] is [verb]	20
28	[subord] more is [verb]	20
29	[subord] [adj] is know	20
30	[subord] more is [verb]	20