SN4 ""

No	Pattern	Freq
1	[be] introduced [prep] the	632
2	be introduced [prep] the	632
3	[was/were] introduced [prep] the	265
4	was introduced [prep] the	180
5	[be] introduced to the	138
6	[be] introduced [prep] the	132
7	be introduced [prep] the	132
8	[be] introduced into the	126
9	[be] introduced in the	121
10	[been] introduced [prep] the	106
11	been introduced [prep] the	106
12	[be] introduced by the	89
13	were introduced [prep] the	85
14	is introduced [prep] the	49
15	[is] introduced [prep] the	49
16	being introduced [prep] the	44
17	[being] introduced [prep] the	44
18	[am/are] introduced [prep] the	36
19	are introduced [prep] the	33
20	[be] introduced at the	31
21	[be] introduced for the	23
22	[be] introduced on the	17
23	[be] introduced with the	13
24	[be] introduced after the	9
25	[be] introduced through the	8
26	[be] introduced throughout the	7
27	[be] introduced during the	6
28	[be] introduced towards the	5
29	[be] introduced onto the	5
30	[be] introduced under the	5