leading-zero-01 = 01
leading-zero-02 = 00
leading-zero-03 = 0_0
leading-zero-sign-01 = -01
leading-zero-sign-02 = +01
leading-zero-sign-03 = +0_1

double-sign-plus = ++99
double-sign-nex = --99

negative-hex = -0xff
negative-bin = -0b11010110
negative-oct = -0o755

positive-hex = +0xff
positive-bin = +0b11010110
positive-oct = +0o755

trailing-us = 123_
leading-us = _123
double-us = 1__23

us-after-hex = 0x_1
us-after-oct = 0o_1
us-after-bin = 0b_1

trailing-us-hex = 0x1_
trailing-us-oct = 0o1_
trailing-us-bin = 0b1_

leading-us-hex = _0x1
leading-us-oct = _0o1
leading-us-bin = _0b1

invalid-hex-01 = 0xaafz
invalid-hex-02 = 0xgabba00f1
invalid-oct = 0o778
invalid-bin = 0b0012

capital-hex = 0X1
capital-oct = 0O0
capital-bin = 0B0