Water + Fire = SteamFire + Steam = EngineEarth + Engine = TractorEarth + Tractor = FarmWater + Farm = RiceEngine + Rice =...

Water + Fire = SteamFire + Steam = EngineEarth + Engine = TractorWater + Tractor = BoatWind + Boat = SailTractor + Sail =...

Water + Fire = SteamFire + Steam = EngineEarth + Engine = TractorWater + Tractor = BoatEngine + Tractor = TankBoat + Tank =...

Water + Fire = SteamFire + Steam = EngineEarth + Engine = TractorWater + Tractor = BoatEarth + Tractor = FarmBoat + Farm =...

Water + Fire = SteamFire + Steam = EngineEarth + Engine = TractorEngine + Engine = RocketEarth + Rocket = MoonTractor + Moon =...

Water + Fire = SteamFire + Steam = EngineEarth + Engine = TractorEngine + Engine = RocketEarth + Tractor = FarmRocket + Farm =...

Water + Fire = SteamFire + Steam = EngineEarth + Engine = TractorSteam + Engine = TrainEarth + Tractor = FarmTrain + Farm =...

Water + Fire = SteamFire + Steam = EngineWind + Engine = WindmillWater + Windmill = EnergyEnergy + Energy = LightningEnergy + Lightning =...

Water + Fire = SteamFire + Steam = EngineWind + Engine = WindmillEarth + Engine = TractorWind + Windmill = ElectricityTractor + Electricity =...

Water + Fire = SteamFire + Steam = EngineEarth + Steam = MudFire + Mud = BrickWind + Brick = HouseEngine + House =...