Consider the dice shown as a simple model of a thermodynamic system.

Consider the dice shown as a simple model of a thermodynamic  system. In this system, the numbers on all the dice {1, 2, 4, 6}  correspond to a microstate; and the sum of the numbers on all  the dice (1 + 2 + 4 + 6 = 13) corresponds to the macrostate. Which one of the following microstates is the least likely to  occur?