SN4 ""

No	Pattern	Freq
1	[conj] [pers pn] had be at	70
2	[subord] [pers pn] had be at	51
3	that [pers pn] had be at	14
4	that [pers pn] had be at	14
5	[that] [pers pn] had be at	14
6	than [pers pn] had be at	13
7	than [pers pn] had be at	13
8	as [pers pn] had be at	11
9	as [pers pn] had be at	11
10	[noun] [pers pn] had be at	11
11	if [pers pn] had be at	10
12	if [pers pn] had be at	10
13	[adv] [pers pn] had be at	9
14	[pron] [pers pn] had be at	8
15	[verb] [pers pn] had be at	8
16	[noun sg] [pers pn] had be at	7
17	[vb past] [pers pn] had be at	6
18	when [pers pn] had be at	5
19	[coord] [pers pn] had be at	5
20	[adv] [pers pn] had be at	5
21	when [pers pn] had be at	5
22	[pers pn] had [adv] be at	22
23	[pers pn] had [not/n't] be at	14
24	[pers pn] had not be at	14
25	[pers pn] had to be at	12
26	[pers pn] had [prep] be at	12
27	[pers pn] had to be at	12
28	[pers pn] had [prep] be at	12
29	[pers pn] had [adv] be at	8
30	[pers pn] had not be at	8