SN4 ""

No	Pattern	Freq
1	[subord] it is [verb]	3898
2	[subord] [pers pn] is [vb pp]	3732
3	if [pers pn] is [verb]	1385
4	when [pers pn] is [verb]	785
5	[subord] he is [verb]	731
6	[subord] [pers pn] is [v-ing]	716
7	as [pers pn] is [verb]	670
8	[subord] [pers pn] is [to-vb]	407
9	because [pers pn] is [verb]	340
10	where [pers pn] is [verb]	272
11	[subord] she is [verb]	212
12	before [pers pn] is [verb]	170
13	whether [pers pn] is [verb]	156
14	unless [pers pn] is [verb]	148
15	although [pers pn] is [verb]	124
16	until [pers pn] is [verb]	120
17	[subord] [pers pn] is known	120
18	[subord] [pers pn] is know	120
19	though [pers pn] is [verb]	117
20	[subord] [pers pn] is use	112
21	[subord] [pers pn] is used	101
22	once [pers pn] is [verb]	96
23	while [pers pn] is [verb]	95
24	since [pers pn] is [verb]	91
25	[subord] [pers pn] is go	90
26	[subord] [pers pn] is make	89
27	[subord] [pers pn] is call	82
28	than [pers pn] is [verb]	81
29	[subord] [pers pn] is going	79
30	[subord] [pers pn] is called	79