gistfile1.txt

    var threes = new List<Three>
    {
        new Three(ThreeType.Ferocity)
        {
            ThreeRows = new List<ThreeRow>()
            {
                new ThreeRow()
                {
                    Priority = 0,
                    MaxPointsInRow = 5, 
                    Masteries = new List<Mastery>()
                    {
                        new Mastery()
                        {
                            Position = Position.Left,
                            Name = "Mastery Name",
                            MaxPoints = 5
                        },
                        new Mastery()
                        {
                            Position = Position.Right,
                            Name = "Mastery Name",
                            MaxPoints = 5
                        }
                    }
                },
                new ThreeRow()
                {
                    Priority = 0,
                    MaxPointsInRow = 1,
                    Masteries = new List<Mastery>()
                    {
                        new Mastery()
                        {
                            Position = Position.Left,
                            Name = "Mastery Name",
                            MaxPoints = 1
                        },
                        new Mastery()
                        {
                            Position = Position.Right,
                            Name = "Mastery Name",
                            MaxPoints = 1
                        }
                    }
                },
                new ThreeRow()
                {
                    Priority = 0,
                    MaxPointsInRow = 5,
                    Masteries = new List<Mastery>()
                    {
                        new Mastery()
                        {
                            Position = Position.Left,
                            Name = "Mastery Name",
                            MaxPoints = 5
                        },
                        new Mastery()
                        {
                            Position = Position.Center,
                            Name = "Mastery Name",
                            MaxPoints = 5
                        },
                        new Mastery()
                        {
                            Position = Position.Right,
                            Name = "Mastery Name",
                            MaxPoints = 5
                        }
                    }
                }
            }
        }
    };
    
    public enum ThreeType
    {
        Ferocity = 0,
        Cunning = 1,
        Resolve = 2
    }

    public enum Position
    {
        Left = 0,
        Center = 1,
        Right = 2
    }
    public class Three
    {
        public Three(ThreeType type)
        {
            ThreeType = type;
        }

        public ThreeType ThreeType { get; set; }
        public List<ThreeRow>  ThreeRows { get; set; }
    }

    public class ThreeRow
    {
        public int Priority { get; set; }
        public int MaxPointsInRow { get; set; }

        public List<Mastery> Masteries { get; set; }
    }

    public class Mastery
    {
        public string Name { get; set; }
        public Position Position { get; set; }
        public int Points { get; set; }
        public int MaxPoints { get; set; }
    }