SN4 ""

No	Pattern	Freq
1	[pron] had be working [prep]	81
2	[pers pn] had be working [prep]	66
3	[noun] had be working [prep]	55
4	he had be working [prep]	33
5	[noun prp] had be working [prep]	33
6	he had be working [prep]	33
7	[noun sg] had be working [prep]	14
8	[Wh pn] had be working [prep]	12
9	who had be working [prep]	12
10	who had be working [prep]	12
11	i had be working [prep]	11
12	she had be working [prep]	11
13	i had be working [prep]	11
14	she had be working [prep]	11
15	[noun pl] had be working [prep]	8
16	they had be working [prep]	7
17	they had be working [prep]	7
18	and had be working [prep]	5
19	and had be working [prep]	5
20	[coord] had be working [prep]	5
21	[conj] had be working [prep]	5
22	had [adv] be working [prep]	17
23	had [adv] be working [prep]	12
24	had not be working [prep]	5
25	had [not/n't] be working [prep]	5
26	had be working [adv] [prep]	18
27	had be working [adv] [prep]	10
28	had be working [adv prt] [prep]	8
29	had be working on [prep]	6
30	had be working on [prep]	6