SN4 ""

No	Pattern	Freq
1	are [vb pp] and [vb pp]	503
2	are [vb pp] and [vb past]	370
3	are [vb pp] and [vb base]	118
4	are made and [verb]	21
5	are [vb pp] and use	21
6	are [vb pp] and [v-ing]	20
7	are [vb pp] and sell	19
8	are defined and [verb]	17
9	are identified and [verb]	17
10	are [vb pp] and have	17
11	are [vb pp] and control	16
12	are [vb pp] and have	16
13	are bought and [verb]	15
14	are collected and [verb]	13
15	are [vb pp] and maintain	13
16	are discussed and [verb]	12
17	are [vb pp] and used	12
18	are designed and [verb]	11
19	are organised and [verb]	11
20	are owned and [verb]	11
21	are produced and [verb]	10
22	are developed and [verb]	10
23	are [vb pp] and discuss	10
24	are known and [verb]	10
25	are prepared and [verb]	10
26	are [vb pp] and manage	10
27	are [vb pp] and take	10
28	are created and [verb]	10
29	are [vb pp] and sold	10
30	are [vb pp] and analyse	9