sign⁻¹ -e r⁻¹

sign⁻¹ -e circle⁻¹ | sign⁻¹ -e turn⁻¹ | sign⁻¹ -e r⁻¹ | sign⁻¹ -e cyc⁻¹ | sign⁻¹ -e 1/Rt Angle | sign⁻¹ -e Quadrant⁻¹ | sign⁻¹ -e Sextant⁻¹ | sign⁻¹ -e rad⁻¹ | sign⁻¹ -e °⁻¹ | sign⁻¹ -e g⁻¹ | sign⁻¹ -e g⁻¹ | sign⁻¹ -e mil⁻¹ | sign⁻¹ -e '⁻¹ | sign⁻¹ -e "⁻¹