When converting the following, it generates "multi-letter entries" for the Recreated Text

LaTeX:
`"E_{nergy}=M_{ass}\\cdot c_{lightSpeed}^2"`

Image for the above:

Recreated shows **_ne_** and **_as_** as multi-char-symbols:
`"E_{(((ne)r)g)y} = M_{(as)s}{c_{((((((((li)g)h)t)S)p)e)e)d}}^2"`

Image for the recreated:

ExpressionTree:`
"Equals\r\n LowerToIndex\r\n Letter(E)\r\n Dot\r\n Dot\r\n Dot\r\n Dot\r\n Letter(n)\r\n Letter(e)\r\n Letter(r)\r\n Letter(g)\r\n Letter(y)\r\n Dot\r\n LowerToIndex\r\n Letter(M)\r\n Dot\r\n Dot\r\n Letter(a)\r\n Letter(s)\r\n Letter(s)\r\n RaiseToIndex\r\n LowerToIndex\r\n Letter(c)\r\n Dot\r\n Dot\r\n Dot\r\n Dot\r\n Dot\r\n Dot\r\n Dot\r\n Dot\r\n Dot\r\n Letter(l)\r\n Letter(i)\r\n Letter(g)\r\n Letter(h)\r\n Letter(t)\r\n Letter(S)\r\n Letter(p)\r\n Letter(e)\r\n Letter(e)\r\n Letter(d)\r\n Number(2)\r\n"`