SN4 ""

No	Pattern	Freq
1	must be [verb]	12065
2	must be [vb pp]	11027
3	must be [v-ing]	868
4	must be make	548
5	must be made	533
6	must be take	438
7	must be taken	428
8	must be do	271
9	must be give	267
10	must be given	262
11	must be done	221
12	must be considered	207
13	must be consider	207
14	must be see	204
15	must be say	202
16	must be seen	200
17	must be said	195
18	must be remember	184
19	must be remembered	182
20	must be [to-vb]	166
21	must be use	163
22	must be used	158
23	must be keep	153
24	must be kept	148
25	must be pay	120
26	must be paid	117
27	must be allow	111
28	must be allowed	109
29	must be set	96
30	must be set	96