SN4 ""

No	Pattern	Freq
1	[conj] when he did	74
2	[coord] when he did	66
3	and when he did	46
4	and when he did	46
5	[noun] when he did	26
6	but when he did	20
7	but when he did	20
8	[noun sg] when he did	19
9	[verb] when he did	19
10	[adv] when he did	16
11	[adj] when he did	15
12	[adv] when he did	12
13	[adj] when he did	9
14	[pron] when he did	8
15	[vb past] when he did	7
16	[pers pn] when he did	7
17	that when he did	5
18	that when he did	5
19	[that] when he did	5
20	when he [adv] did	11
21	when he [adv] did	11
22	when he did [adv]	94
23	when he did [not/n't]	77
24	when he did not	77
25	when he did [verb]	71
26	when he did [vb infin]	70
27	when he did n't	51
28	when he did [pron]	40
29	when he did [pers pn]	29
30	when he did not	26