2. Consider which two numbers add up to 149. The sum of digits cannot be 19, but only 1+8=9 in 1689. Only 6+8= 14. There are two situations.

1.68 and 8 1. In Figure 2, 18 and 8 1 both appear, which is contradictory.

2.6 1 and 88, but 88 does not appear three times, so the antonym of 88 should appear three times. 69 didn't appear for the third time, only 66 (99) appeared for three times, so the second dice order changed and contradicted.

To sum up, there is no solution to this problem.