SN4 ""

No	Pattern	Freq
1	who have [adv] [been] [adj]	89
2	who have [adv] be [adj]	89
3	who have [adv] been [adj]	89
4	who have [adv] [be] [adj]	83
5	who had [adv] [be] [adj]	57
6	who have never [be] [adj]	17
7	who have [adv] [be] [adj]	16
8	who has [adv] [be] [adj]	12
9	who have always [be] [adj]	12
10	who have previously [be] [adj]	12
11	who have [adv] [be] able	8
12	who have [adv] [be] able	8
13	who have [adv] [be] involved	8
14	who have [adv] [be] involved	8
15	who have long [be] [adj]	7
16	who have once [be] [adj]	7
17	who have [adv] [be] married	6
18	who have [adv] [be] married	6
19	who have [adv] [be] [num]	5
20	who have recently [be] [adj]	5
21	who have also [be] [adj]	5