Number of combinations created in this step: 14

437. Nonruminants = Canines + Cloven-Hoofed Animals
438. Cloud Castle = Castle + Clouds
439. Moat = Castle + Water
440. Ruminants = Cloven-Hoofed Animals + Grass
441. Activated Carbon = Coconut Shell + Fire
442. Coconut Milk = Coconut Shell + Water
443. Helium = Gas Refinery + Natural Gas
444. Nightingale = Melody + Birds
445. Musical Instruments = Melody + Tools
446. Benzine = Oil + Oil Refinery
447. Lumber Mill = Powersaw Bench + Incomplete Building
448. Sledge = Skis + Cart
449. Town = Village + Castle
450. Irrigation System = Water Tower + Water Pipeline