Accepted C# Solution
\n    public class Solution\n    {\n        public IList<string> AmbiguousCoordinates(string s)\n        {\n            s = s.Substring(1, s.Length - 2);\n     
```\n    public class Solution\n    {\n        public IList<string> AmbiguousCoordinates(string s)\n        {\n            s = s.Substring(1, s.Length - 2);\n            IList<string> res = new List<string>();\n            for (int i = 1; i < s.Length; i++)\n            {\n                var left = s.Substring(0, i);\n                var right = s.Substring(i, s.Length - i);\n\n\n                IList<string> lefts = new List<string>();\n                IList<string> rights = new List<string>();\n\n                if (!(left.Length >= 2 && left[0] == \'0\'))\n                {\n                    lefts.Add(left);\n                }\n\n\n                if (!(right.Length >= 2 && right[0] == \'0\'))\n                {\n                    rights.Add(right);\n                }\n\n                for (int j = 1; j < left.Length; j++)\n                {\n                    var leftLeft = left.Substring(0, j);\n                    if (j > 1 && leftLeft[0] == \'0\')\n                    {\n                        continue;\n                    }\n                    var leftRight = left.Substring(j, left.Length - j);\n\n                    if (leftRight.Length > 1 && leftRight[leftRight.Length - 1] == \'0\')\n                    {\n                        continue;\n                    }\n\n\n                    var cand = $"{leftLeft}.{leftRight}";\n                    if (int.Parse(leftRight) == 0)\n                    {\n                        continue;\n                    }\n                    lefts.Add(cand);\n                }\n\n\n                for (int j = 1; j < right.Length; j++)\n                {\n                    var rightLeft = right.Substring(0, j);\n                    if (j > 1 && rightLeft[0] == \'0\')\n                    {\n                        continue;\n                    }\n                    var rightRight = right.Substring(j, right.Length - j);\n\n                    if (rightRight.Length > 1 && rightRight[rightRight.Length - 1] == \'0\')\n                    {\n                        continue;\n                    }\n\n                    var cand = $"{rightLeft}.{rightRight}";\n                    if (int.Parse(rightRight) == 0)\n                    {\n                        continue;\n                    }\n                    rights.Add(cand);\n                }\n\n                foreach (var l in lefts)\n                {\n                    foreach (var r in rights)\n                    {\n                        res.Add($"({l}, {r})");\n                    }\n                }\n\n            }\n            return res;\n        }\n    }\n```
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