SN4 ""

No	Pattern	Freq
1	must be [verb] that	641
2	must be [verb] that	641
3	must be [vb pp] that	626
4	must be remembered that	133
5	must be remember that	133
6	must be say that	90
7	must be said that	90
8	must be stress that	52
9	must be stressed that	52
10	must be admit that	33
11	must be admitted that	33
12	must be note that	31
13	must be noted that	31
14	must be emphasised that	27
15	must be emphasise that	27
16	must be recognise that	24
17	must be recognised that	24
18	must be shown that	13
19	must be recognize that	13
20	must be emphasize that	13
21	must be recognized that	13
22	must be emphasized that	13
23	must be show that	13
24	must be assume that	12
25	must be acknowledged that	12
26	must be assumed that	12
27	must be [v-ing] that	12
28	must be acknowledge that	12
29	must be appreciate that	11
30	must be appreciated that	11