GreaterGreater[x, y, ...] displays as x \[GreaterGreater] y \[GreaterGreater] ....
GreaterLess[x, y, ...] displays as x \[GreaterLess] y \[GreaterLess] ....
GreaterTilde[x, y, ...] displays as x \[GreaterTilde] y \[GreaterTilde] ....
HaradaNortonGroupHN[] represents the sporadic simple Harada\[Dash]Norton group HN.
HeldGroupHe[] represents the sporadic simple Held group He.
HumpDownHump[x, y, ...] displays as x \[HumpDownHump] y \[HumpDownHump] ....
HumpEqual[x, y, ...] displays as x \[HumpEqual] y \[HumpEqual] ....
JankoGroupJ4[] represents the sporadic simple Janko group J_4.
LeftArrowBar[x, y, ...] displays as x \[LeftArrowBar] y \[LeftArrowBar] ....
LeftArrow[x, y, ...] displays as x \[LeftArrow] y \[LeftArrow] ....