SN4 ""

No	Pattern	Freq
1	[verb] on at the [noun]	149
2	[verb] on at the [noun]	149
3	[verb] on at the [noun sg]	132
4	[v-ing] on at the [noun]	65
5	go on at the [noun]	56
6	going on at the [noun]	44
7	[verb] on at the moment	29
8	[verb] on at the moment	28
9	[vb past] on at the [noun]	24
10	[vb pp] on at the [noun]	20
11	stay on at the [noun]	18
12	[to-vb] on at the [noun]	17
13	[verb] on at the time	16
14	[verb] on at the time	16
15	[verb] on at the end	15
16	[verb] on at the end	15
17	work on at the [noun]	12
18	working on at the [noun]	11
19	[vb infin] on at the [noun]	10
20	[verb] on at the [noun prp]	10
21	to stay on at the [noun]	8
22	[vb base] on at the [noun]	8
23	carry on at the [noun]	7
24	[verb] on at the [noun pl]	6
25	[vb -s] on at the [noun]	5
26	[verb] on at the back	5
27	[verb] on at the back	5
28	[verb] on at the start	5
29	went on at the [noun]	5
30	sign on at the [noun]	5