016+ string(32) "10000000000000000000000000000000"
016- string(32) "11111111111111111111111111111111"
019+ string(32) "10000000000000000000000000000000"
019- string(1) "0"
028+ string(32) "10000000000000000000000000000000"
028- string(32) "10111110100110010001101000001000"