Pair 'em up!

The 9 digits: 1,2,3,4,5,6,7,8,9

PAIR = 2 digits in ascending order; example 37 ; 1st digit < 2nd digit
So there are 36 PAIRs using the 9 digits:
12, 13, 14, ... , 78, 79, 89

3DN = 3 digit number, digits in ascending order; example 238 ; 1st digit < 2nd digit < 3rd digit
So there are 84 3DNs using the 9 digits:
123, 124, 125, ... , 679, 689, 789

A 3DN contains 3 PAIRs; example: 238 contains 23, 28 and 38

Your mission:
find 12 3DNs that together will contain all 36 PAIRs.

Here ya go.

123 - 145 - 167 - 189 - 247 - 258 - 269 - 349
356 - 378 - 468 - 579

Nice Flo! Mine were:
123-147-159-168-249-258
267-348-357-369-456-789

Not many alike, I'm glad you didn't want all the same ones, it took long enough to figure that combination out.

Good one, Flo

I worked on that for a while and kept coming up with a couple left overs!

I started this way:
Step 1: do 123, 456, 789
Step 2: do 147, 258, 369