SN4 ""

No	Pattern	Freq
31	must have seemed [adv]	22
32	must have seem [adv]	22
33	must have [art] [adv]	19
34	must have [art] [adv]	19
35	must have a [adv]	19
36	must have a [adv]	19
37	must have have [adv]	15
38	must have go [adv]	15
39	must have gone [adv]	14
40	must have had [adv]	14
41	must have done [adv]	13
42	must have do [adv]	13
43	must have looked [adv]	12
44	must have look [adv]	12
45	must have felt [adv]	10
46	must have [noun] [adv]	10
47	must have know [adv]	10
48	must have feel [adv]	10
49	must have known [adv]	10
50	must have [noun sg] [adv]	8
51	must have come [adv]	8
52	must have work [adv]	7
53	must have get [adv]	7
54	must have change [adv]	7
55	must have worked [adv]	7
56	must have got [adv]	7
57	must have come [adv]	7
58	must have changed [adv]	7
59	must have died [adv]	7
60	must have die [adv]	7