SN4 ""

No	Pattern	Freq
1	can be [adv] [adj]	2345
2	can be [adv] [adj]	2205
3	can be very [adj]	668
4	can be as [adj]	215
5	can be quite [adj]	214
6	can be more [adj]	138
7	can be extremely [adj]	113
8	can be [adv] difficult	107
9	can be [adv] difficult	107
10	can be so [adj]	104
11	can be [adv] useful	82
12	can be [adv] useful	82
13	can be [adv] effective	67
14	can be [adv] effective	67
15	can be [adv] [det]	65
16	can be [adv] important	55
17	can be [adv] important	55
18	can be particularly [adj]	55
19	can be [adv] helpful	47
20	can be [adv] helpful	47
21	can be [adv] sure	47
22	can be [adv] sure	47
23	can be [adv] [adj -er]	43
24	can be [adv] much	39
25	can be [adv] much	39
26	can be [adv] expensive	38
27	can be [adv] expensive	38
28	can be [adv] dangerous	37
29	can be most [adj]	37
30	can be [adv] dangerous	37