{ "0": [ "ael", "Aeolian Straight" ], "1": [ "rou", "Rough Terrain" ], "2": [ "cli", "Cliff" ], "3": [ "aec", "Aeolian Curved" ], "4": [ "tex", "Textured Terrain" ], "5": [ "smo", "Smooth Terrain" ], "6": [ "fss", "Mass Wasting" ], "7": [ "rid", "Ridge" ], "8": [ "fse", "Slope Streaks" ], "9": [ "sfe", "Mounds" ], "10": [ "fsf", "Channel" ], "11": [ "fsg", "Gullies" ], "12": [ "sfx", "Crater Field" ], "13": [ "cra", "Crater" ], "14": [ "mix", "Mixed Terrain" ] }