Table:
Financial Year ended 31 March

2019	2018	Change

(S$ million)	(S$ million)	(%)

Net cash inﬂow from operating activities	5,368	5,955	-9.9

Net cash outﬂow for investing activities	(2,329)	(1,951)	19.4

Net cash outﬂow for ﬁnancing activities	(3,056)	(4,009)	-23.8

Net change in cash balance	(16)	(5)	248.9

Exchange effects on cash balance	4	(4)	nm

Cash balance at beginning of year	525	534	-1.7

Cash balance at end of year	513	525	-2.3

Singtel (1)	1,242	1,126	10.3

Optus	1,006	989	1.8

Associates (net dividends after withholding tax)	1,402	1,492	-6.0

Group free cash ﬂow	3,650	3,606	1.2

Optus (in A$ million)	1,028	947	8.5

Cash capital expenditure as a percentage of operating revenue	10%	14%

A table may have multiple merged cells and we can represent a merged cell region by a JSON {'top-left':(X, Y), 'bottom-right':(Z, W)}. Here, '(X, Y)' and '(Z, W)' denote the coordinates (row_id, column_id) of the top-left and bottom-right cells of the merged regions, respectively. Now, based on the shown table image, please find all merged cells in this table and return their representations in the above format. Keep in mind that row and column IDs start from 1.

This table does not contain any merged cells.