SN4 ""

No	Pattern	Freq
1	when they have [verb]	596
2	when they have [verb]	596
3	when they have [vb pp]	564
4	when they had [verb]	269
5	when they have [verb]	142
6	when they 've [verb]	109
7	when they 'd [verb]	76
8	when they have finish	74
9	when they have finished	74
10	when they have go	55
11	when they have gone	53
12	when they have get	33
13	when they have got	33
14	when they have [to-vb]	32
15	when they have leave	23
16	when they have left	21
17	when they have have	20
18	when they have had	20
19	when they have do	16
20	when they have done	15
21	when they have make	13
22	when they have made	12
23	when they have seen	10
24	when they have eaten	10
25	when they have met	10
26	when they have eat	10
27	when they have meet	10
28	when they have see	10
29	when they have move	8
30	when they have moved	8