Compare 2 columns extract unique / distinct records in 3 column without vba

[sanjuss2]

	Column A	Column B	Unique List with formula		Autofilter
1	60122001	702995			702995
2	60122005	60122112			60122112
3	60122007	60122005			60122005
4	80112356	1458740			1458740
5	60122011	60122001			60122001
6	60122013	60122033			60122033
7	60122015	60122035			60122035
8	60122035	60122043			60122043
9	60122055	1234597			1234597
10	60122075	60122003			60122003
11	60122095	60122013			60122013
					60122007
					80112356
					60122011
					60122015
					60122055
					60122075

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</tbody>

I want comparing 2 columns & extract unique records in column naming Unique List with formula as I have done it by using data ---> remove duplicates
I want this result without using VBA as well as advance filter... this is actually sample data I have Column A 18750 records & Column B 21856 records....
thanks in advance

 

[sanjuss2]

this is the formula give exact result
{=IFERROR(INDEX($A$2:$A$18,MATCH(0,COUNTIF($D$2:D2,$A$2:$A$18)+($A$2:$A$18=""),0)),IFERROR(INDEX($B$2:$B$12,MATCH(0,COUNTIF($D$2:D2,$B$2:$B$12)+($B$2:$B$12=""),0)),"-"))}