Take the digits 4, 5, 6, 7, 8 and 9.
Make any three numbers each with 8 digits.
Put commas for easy reading.
For making three numbers with eight digits we are putting two digits twice as we are having only 6 digits in the question.
Three numbers are
1. 46579868
2. 57649845
3. 78965469
By using commas
1. 4, 65, 79, 868
2. 5, 76, 49, 845
3. 7, 89, 65, 469