SN4 ""

No	Pattern	Freq
1	[noun] could be achieve [prep]	63
2	[noun sg] could be achieve [prep]	51
3	[det] could be achieve [prep]	22
4	[adj] could be achieve [prep]	22
5	[pron] could be achieve [prep]	19
6	this could be achieve [prep]	18
7	this could be achieve [prep]	18
8	[Wh det] could be achieve [prep]	16
9	[noun pl] could be achieve [prep]	12
10	what could be achieve [prep]	12
11	what could be achieve [prep]	12
12	[conj] could be achieve [prep]	11
13	result could be achieve [prep]	5
14	[that] could be achieve [prep]	5
15	result could be achieve [prep]	5
16	that could be achieve [prep]	5
17	that could be achieve [prep]	5
18	could [adv] be achieve [prep]	55
19	could [adv] be achieve [prep]	39
20	could only be achieve [prep]	19
21	could only be achieve [prep]	19
22	could not be achieve [prep]	16
23	could [not/n't] be achieve [prep]	16
24	could not be achieve [prep]	16
25	could [verb] be achieve [prep]	11
26	could [vb infin] be achieve [prep]	11
27	could have be achieve [prep]	10
28	could have be achieve [prep]	10
29	could best be achieve [prep]	6
30	could best be achieve [prep]	6