Hello, Stew99!

I'll format the problem.

. . Maybe others will be tempted to try it.

I've made some observation . . .Use the digits 0-9 exactly twice.Code:A B C × D E F - - - - - G H I J K L M N P - - - - - Q R S T U

Assuming a number may not begin with zero: .

Also, neither nor can be zero.

. . Otherwise: . ... and we'd have three 0's.

. . Stay tuned . . .