<<< native [ ESuper (EIdentifier "v") (ESuper (EIdentifier "w") (ESuper (EIdentifier "x") (ESuper (EIdentifier "y") (EIdentifier "z")))) ] >>> mml <?xml version='1.0' ?> <math display="block" xmlns="http://www.w3.org/1998/Math/MathML"> <msup> <mi>v</mi> <msup> <mi>w</mi> <msup> <mi>x</mi> <msup> <mi>y</mi> <mi>z</mi> </msup> </msup> </msup> </msup> </math>