SN4 ""

No	Pattern	Freq
1	[noun] at a lower [noun sg]	58
2	[verb] at a lower [noun sg]	56
3	[noun sg] at a lower [noun sg]	42
4	[vb pp] at a lower [noun sg]	28
5	[conj] at a lower [noun sg]	19
6	[noun pl] at a lower [noun sg]	15
7	[adv] at a lower [noun sg]	15
8	[adv] at a lower [noun sg]	12
9	[be] at a lower [noun sg]	11
10	[coord] at a lower [noun sg]	11
11	be at a lower [noun sg]	11
12	[v-ing] at a lower [noun sg]	9
13	[vb -s] at a lower [noun sg]	8
14	[subord] at a lower [noun sg]	8
15	[adj] at a lower [noun sg]	7
16	and at a lower [noun sg]	6
17	and at a lower [noun sg]	6
18	operate at a lower [noun sg]	6
19	[is] at a lower [noun sg]	5
20	[to-vb] at a lower [noun sg]	5
21	is at a lower [noun sg]	5
22	[adj] at a lower [noun sg]	5
23	at a [adv] lower [noun sg]	49
24	at a [adv] lower [noun sg]	49
25	at a much lower [noun sg]	30
26	at a much lower [noun sg]	30
27	at a slightly lower [noun sg]	7
28	at a slightly lower [noun sg]	7
29	at a significantly lower [noun sg]	5
30	at a significantly lower [noun sg]	5