SN4 ""

No	Pattern	Freq
1	who have [adv] [be]	862
2	who have [adv] [be]	612
3	who have [not/n't] [be]	250
4	who have not [be]	250
5	who have not [be]	200
6	who have never [be]	87
7	who have never [be]	87
8	who have [prep] [be]	74
9	who have to [be]	74
10	who have to [be]	74
11	who have [prep] [be]	74
12	who have already [be]	51
13	who have already [be]	51
14	who have also [be]	50
15	who have also [be]	50
16	who have n't [be]	50
17	who have previously [be]	46
18	who have previously [be]	46
19	who have always [be]	45
20	who have always [be]	45
21	who have just [be]	43
22	who have just [be]	43
23	who have once [be]	38
24	who have once [be]	38
25	who have recently [be]	29
26	who have recently [be]	29
27	who have [pron] [be]	27
28	who have [vb pp] [be]	26
29	who have [verb] [be]	26
30	who have long [be]	24