Symbol with left and right subscript and right superscript

I am trying to come up with a variable that has a left and right subscript and right superscript. I have tried the following

NotationSymbolize[
NotationParsedBoxWrapper[{SubscriptBox["RVC", "B"],
SubsuperscriptBox["RV", "BV", "KJK"]}]]


which gives a variable that has a right superscript that in turn has a right superscript and subscript but isn't what I'm looking for

Other things I have tried is the following

nCr /: MakeBoxes[nCr[n_, r_], StandardForm] :=
RowBox[{SubscriptBox["\[InvisiblePrefixScriptBase]",
MakeBoxes[n, StandardForm]],
SubscriptBox["C", MakeBoxes[r, StandardForm]]}]


which gives a variable with a left and right superscript but won't translate to a variable with Symbolize.

• nCr from this answer. – kglr Apr 1 '15 at 22:38
• It appears Symbolize will not accept row boxes. However for typesetting you can adapt the nCr approach to render what you want – Mike Honeychurch Apr 2 '15 at 0:54
• I can create (sort of, it needs some adjustment) the form I want with the following: – Dave Mitt Apr 2 '15 at 2:41
• MakeBoxes[MyHead2[a_, b_, c_, d_], form : (StandardForm | TraditionalForm) : StandardForm] := Module[{dispFunc}, dispFunc = GridBox[{{"", "", #1}, {"", #2, ""}, {#3, "", #4}}, GridBoxDividers -> {"Rows" -> {{False}}, "Columns" -> {{False}}}] &; TemplateBox[{MakeBoxes[a, form], MakeBoxes[b, form], MakeBoxes[c, form], MakeBoxes[d, form]}, "String", DisplayFunction -> dispFunc, InterpretationFunction -> (GridBox[{{#1, "", ""}, {"", #2, ""}, {#3, "", #4}}, GridBoxDividers -> {"Rows" -> {{False}}, "Columns" -> {{False}}}] &)]] – Dave Mitt Apr 2 '15 at 2:48
• with the following at the beginning of the previous code: Clear[MyHead2]; MyHead2 /: if I use the Ctrl+Shift+E to get the underlying code then try and turn the mixed variables into a single variable with NotationSymbolize[NotationParsedBoxWrapper[]] like I do with the first example I gave, all I get are errors. The commands are the same type (ones that come from the pallet) but I can't get the single variable that it is supposed to provide. Are there other ways to do this that don't require the use of the Notation Package? Thanks for your help. – Dave Mitt Apr 2 '15 at 2:57