说明：  将A、B、C、D、E、F这六个变量排成如图所示的三角形，这六个变量分别取[1，6]上的整数，且均不相同。求使三角形三条边上的变量之和相等的全部解。如图就是一个解。
(A, B, C, D, E, F ranks of the six variables, as shown in Figure triangle, six variables, respectively [1,6] integer, which vary. Seeking to make the edge of the triangle three variables equal to the sum of all the solutions. Figure 1 is the solution.)