SN4 ""

No	Pattern	Freq
1	[conj] she must have been	31
2	that she must have been	18
3	[that] she must have been	18
4	that she must have been	18
5	[verb] she must have been	10
6	[coord] she must have been	10
7	[adv] she must have been	7
8	[adv] she must have been	6
9	and she must have been	5
10	and she must have been	5
11	think she must have been	5
12	[vb past] she must have been	5
13	she must [adv] have been	8
14	she must [adv] have been	7
15	she must have been [verb]	49
16	she must have been [adv]	30
17	she must have been [adj]	30
18	she must have been [v-ing]	30
19	she must have been [adv]	28
20	she must have been [adj]	27
21	she must have been [vb pp]	19
22	she must have been [prep]	12
23	she must have been [prep]	12
24	she must have been [art]	12
25	she must have been [art]	12
26	she must have been in	10
27	she must have been in	10
28	she must have been a	9
29	she must have been mad	8
30	she must have been mad	8