SN4 ""

No	Pattern	Freq
1	should be [verb] for [adj] [noun]	139
2	should be [vb pp] for [adj] [noun]	130
3	should be [verb] for [adj] [noun sg]	75
4	should be [verb] for [adj] [noun]	68
5	should be [verb] for [adj] [noun pl]	62
6	should be [verb] for [det] [noun]	48
7	should be used for [adj] [noun]	19
8	should be use for [adj] [noun]	19
9	should be [verb] for [num] [noun]	14
10	should be [verb] for each [noun]	13
11	should be [verb] for each [noun]	13
12	should be [verb] for this [noun]	11
13	should be [verb] for this [noun]	11
14	should be [verb] for [adj] purpose	10
15	should be [verb] for [adj -er] [noun]	8
16	should be [verb] for all [noun]	8
17	should be [v-ing] for [adj] [noun]	8
18	should be [verb] for [adj] purpose	8
19	should be [verb] for all [noun]	8
20	should be [verb] for [adj] year	6
21	should be [verb] for [adj] years	6
22	should be considered for [adj] [noun]	6
23	should be consider for [adj] [noun]	6
24	should be [verb] for any [noun]	5
25	should be [verb] for future [noun]	5
26	should be [verb] for any [noun]	5
27	should be make for [adj] [noun]	5
28	should be [verb] for future [noun]	5
29	should be made for [adj] [noun]	5