User blog comment:Ubersketch/BMS for small children./@comment-36984051-20190807010030

The bad root of (0,0)(1,1)(2,2) is (1,1). You don’t cross out the 1 in the (0)(1)(2) when finding the bad root. The actual expansion of (0,0)(1,1)(2,2) is (0,0)(1,1)(2,1)(3,1)(4,1)(5,1)...