0,1,2,10,11,12,20,21,22,30,31,32,100,101,102,110,111,112,120,121,122,130,131,132
2010黄石中考数学中的可连数问题
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0,1,2,10,11,12,20,21,22,30,31,32,100,101,102,110,111,112,120,121,122,130,131,132