1
on
2
on account of
3
on all fours
4
on and off
5
on and on
6
on average
7
on behalf of
8
on board
9
on demand
10
on duty
11
on edge
12
on file
13
on foot
14
on heat
15
on loan
16
on my own
17
on notice
18
on purpose
19
on record
20
on sale
21
on sight
22
on tenterhooks
23
on the contrary
24
on the dot
25
on the line
26
on the one hand
27
on the other hand
28
on the qt
29
on the rampage
30
on the rebound
31
on the rocks
