public class Solution {

    public bool WordPattern(string pattern, string str) {

        var list = str.Split(' ').ToList();

            int type1 = ;

            int type2 = ;

            StringBuilder sb1 = new StringBuilder();

            StringBuilder sb2 = new StringBuilder();

            Dictionary<string, int> dic1 = new Dictionary<string, int>();

            Dictionary<char, int> dic2 = new Dictionary<char, int>();

            foreach (var word in list)

            {

                if (!dic1.ContainsKey(word))

                {

                    dic1.Add(word, type1);

                    sb1.Append(type1);

                    type1++;

                }

                else

                {

                    sb1.Append(dic1[word]);

                }

            }

            foreach (var c in pattern)

            {

                if (!dic2.ContainsKey(c))

                {

                    dic2.Add(c, type2);

                    sb2.Append(type2);

                    type2++;

                }

                else

                {

                    sb2.Append(dic2[c]);

                }

            }

            if (sb1.ToString() != sb2.ToString())

            {

                return false;

            }

            else

            {

                return true;

            }

    }

}