Thanks all. Let's dissect it further from triads to pairs. We are looking for missing 12XX and 99X.
15 Draw pair SS Tracking Chart
Date/Time Number AB AC AD BC BD CD
12/31 EVE 1270 3 8 1 9 2 7
01/01 MID 1182 2 9 3 9 3 0
01/01 EVE 5808 3 5 3 8 6 8
01/02 MID 2075 2 9 7 7 5 2
01/02 EVE 8881 6 6 9 6 9 9
01/03 MID 7735 4 0 2 0 2 8
01/03 EVE 3873 1 0 6 5 1 0
01/04 MID 2766 9 8 8 3 3 2
01/04 EVE 7019 7 8 6 1 9 0
01/05 MID 7479 1 4 6 1 3 6
01/05 EVE 1039 1 4 0 3 9 2
01/06 EVE 6619 2 7 5 7 5 0
01/07 MID 3090 3 2 3 9 0 9
01/07 EVE 6227 8 8 3 4 9 9
01/08 MID 1746 8 5 7 1 3 0
Missing pair SS AB-0, 5 need pairs 00XX, 05XX, 14XX, 23XX
AC-1,3 need pairs 0X1X, 0X3X, 1X2X. Missing pair 12XX can be here or AD and BC too.
AD-1, need pair 0XX1
BC-2, need pair XX02, XX11
BD-4, 7, 8 need pairs X4X0 X1X3 X2X2 X7X0 X1X6 X2X5 X3X4 X0X8 X1X7 X2X6 X3X5 X4X4. Missing 99XX pair can be BD SS 8. X9X9=sum 18, so SS 8.
CD-1, 3, 4, 5 need pairs XX01 XX03 XX12 XX04 XX13 XX22 XX05 XX14 XX23
These are just single SS due pairs. U gonna have to do some work and figure out doubles like CD SS 5 could be XX96, CD sum 15, so SS 5 etc.