using System;

using System.Linq;

​

public class Program {

    public static void Main() {

        int ppp = 111;

        foreach (var x in from ef in Enumerable.Range(10, 99)

                          from cd in Enumerable.Range(10, 99)

                          let gh = ppp - ef

                          let ab = ef + cd

                          where new int[]{ef, gh, ab, cd}.SelectMany(o => new int[]{ o / 10, o % 10}).Distinct().Where(o => o != 1).Count() == 8 && ab > 9 && ab < 100

                          select new {AB = ab, CD = cd, EF= ef, GH = gh}){

            Console.WriteLine(string.Format("{0} - {1} = {2} + {3} = 111", x.AB, x.CD, x.EF, x.GH));

        }       

    }

}