add a few more solutions

Common/FragmentLevelSolverBase.cs

@@ -3,6 +3,7 @@
 using AoCLevelInputProvider;
 using Parsing;
 using Parsing.Schema;
+using Parsing.Data;
 using Parsing.Tokenization;
 
 public abstract class FragmentLevelSolverBase

Common/FulltextLevelSolverBase.cs

@@ -3,6 +3,7 @@
 using AoCLevelInputProvider;
 using Parsing;
 using Parsing.Schema;
+using Parsing.Data;
 using Parsing.Tokenization;
 
 public abstract class FullTextLevelSolverBase