Ill have a go at this:
Top First Tree: ElementalTop 1: Winter's Grasp
Top 2: Cone of Cold
Low 1: Fireball
Low 2: Flame Blast
Mid 1: Fire resistance?
End: Passive Elemental (Fire/Ice) Mastery
Top Second Tree: NatureTop 1: Stonefist
Top 2: Petrify
Mid 1: Rock Armor
Low 1: Lightning
Low 2: Shock
End: Passive Elemental (Earth/Lightning) Mastery
Top Third Tree: EntropyTop 1: Weakness/Hex
Mid 1: Misdirection Hex
Low 1: Horror
Low 2: Sleep
End: Paralyse or Death Cloud?
Mid First Tree: SpiritTop 1: Arcane Bolt
Top 2: Walking Bomb
Low 1: Dispel Magic
Mid 1: Animate Dead or Death Syphon
End: Passive Spirit (Arcane) Mastery?
Mid Second Tree: ArcaneTop 1: Telekinetic Weapons
Top 2: Force Shield
Mid 1: Mind Blast
Mid 2: Crushing Prison
Low 1: Arcane Shield
Mid Third Tree: CreationTop 1: Glyph of Paralysis
Top 2: Glyph or Repulsion
Mid 1: Heal
Mid 2: Haste
Low 1: Heroic
Low First Tree: Battlemage?Top 1: Gravity?
Top 2: Fade Shield (Or some Passive Defence Uppgrade)
Mid 1: Slow?
Low 1: Repulsion Field
Low 2: Crushing or Drain something?
Low Second Tree: Spirit HealerStart: Cleansing Aura?
Top 1: Group Heal
Top 2: Passive Bonus to Healing?
Low 1: Revive?
Low 2: Lifeward on mage?
Low Third Tree: Blood MagicStart: Blood Magic
Top 1: Blood Wound
Mid 1: Blood Sacrifice
Mid 2: Blood Control
Low 1: Demon Summon?
My head hurts.

But I think I got many of them right.

Spirit Healer was hard and since we don't know what the first Specialization is (not Force Mage, anyway), that was even harder.