I had to pull my combo report to take a look at this. I only have 146 draw inputs in my system so it is a short run comparison. my chart is below compare.
Gotta go check powerball numbers to see if I won.

/t_#____________
_123_012/567_____
_124_013/568_____01/56
_125_014/569
_134_023/578_____02-03/57-58 [023 most frequently i would think]
_135_024/579_____04/59
_145_034/589
_234_123/678_____12-13-23/67-68-78
_235_124/679_____14-24/69-79
_245_134/689_____34/89
_345_234/789

__________________________
COMBO_____Hits         
______________
123________26                     
678________18               
124________17             
023________17                     
024________14                   
679________11                   
579________10                 
689_________9               
578_________7               
134_________7                 
568_________6                 
013_________4