Number of combinations created in this step: 18

419. Ancient Skates = Ancient Footwear + Bones
420. Cloven-Hoofed Animals = Ancient Footwear + Mammals
421. Palm Leaves Sandals = Ancient Footwear + Palms
422. Automated Factory = Assembly Line + Incomplete Factory
423. Powersaw Bench = Assembly Line + Saw
424. Coconut Shell = Coconut + Stone
425. Canning = Fish Yield + Food Factory
426. Gas Refinery = Gas Pipeline + Incomplete Factory
427. Holiday Stockings with Ash = Holiday Stockings + Ash
428. Holiday Stockings with Gifts = Holiday Stockings + Candy
429. Melody = Note + Note
430. Oil Refinery = Oil Pipeline + Incomplete Factory
431. Skis = Snow + Ancient Footwear
432. Clock Tower = Tower + Mechanical Clock
433. Lighthouse = Tower + Search Light
434. Watch Tower = Tower + Spyglass
435. Water Tower = Tower + Draw Well + Pump
436. Castle = Tower + Tower + House