S={1..10 [奶=有] [脚=无]y 毛发有「羽毛有食物蜜 Sl={1.4 S2={5..8} S3={9,10 [食物=肉 羽毛无1Y脚=蹄 会飞=是] 脚一有爪] 脚=有爪 S2l={56}S22={7,8} Sll={1,2}s12={34} S31={0}S32={10S={1…10} S1={1…4} S2={5…8} S3={9,10} S11={1,2} S12={3,4} S21={5,6} S22={7,8} S31={0} S32={10} [奶=有] [毛发=有] [食物=肉] [羽毛=无] [脚=有爪] [脚=蹄] [羽毛=有] [会飞=是] [脚=有爪] [脚=无] [食物=蜜]