SN4 ""

No	Pattern	Freq
1	have been [verb] and	881
2	have been [vb pp] and	833
3	have been [v-ing] and	46
4	have been made and	20
5	have been make and	20
6	have been killed and	16
7	have been kill and	16
8	have been arrest and	16
9	have been arrested and	16
10	have been try and	12
11	have been identified and	12
12	have been tried and	12
13	have been identify and	12
14	have been completed and	11
15	have been complete and	11
16	have been developed and	11
17	have been introduced and	11
18	have been develop and	11
19	have been introduce and	11
20	have been remove and	10
21	have been removed and	10
22	have been close and	10
23	have been closed and	10
24	have been take and	9
25	have been taken and	9
26	have been describe and	9
27	have been described and	9
28	have been sold and	8
29	have been agree and	8
30	have been sell and	8