rem='';/*
@node "%~f0" %*
@goto :eof
  :mode=javascript:

:: convert APL characters <=> multigraphs
:: `a `w `e `i `o `y `u `s `d `g `h `j `l `z `x `c `v `b `n  <=> chars placed on keys
::  ⍺  ⍵  ∊  ⍳  ○  ↑  ↓  ⌈  ⌊  ∇  ∆  ∘  ⎕  ⊂  ⊃  ∩  ∪  ⊥  ⊤
:: `-> `<- `/\ `\/ `>< `* `<> `@ `== `# `/= `<= `>= `- `%    <=> chars looking similar
::  →   ←   ∧   ∨   ×   ×  ⋄   ∘  ≡   ≢  ≠   ≤   ≥   ¯  ÷
:: `MUL `DIV  `QUAD `IDX `INF                                <=> names
::  ×    ÷     ⎕     ⍳    ∞
:: `` ``O ``j ``* ``> ``~                                    <=> diaeresis
::  ¨   ⍥   ⍤   ⍣   ⍩   ⍨
:: `[] `['] `[=]  `]  `[/] `[<>]                             <=> quad
::  ⎕    ⍞    ⌸    ⌷    ⍁    ⌺
:: `() `(*) `(-) `(|) `(\)                                   <=> circle
::   ○   ⍟    ⊖    ⌽    ⍉
:: `-/ `-\ `-,                                               <=> hor. strike
::   ⌿   ⍀   ⍪
:: `~0 `~|                                                   <=> tilde
::   ⍬   ⍭
:: `|g `|h `|<-                                              <=> ver. strike
::   ⍒   ⍋   ⍅
:: `_a `_w                                                   <=> underline
::   ⍶   ⍹
:: `_A_B_C_Z_ `_X_ `_Y_Y  Y`_Y_                              <=> underlined letters
::  ⒶⒷⒸⓏ   Ⓧ   ⓎY   YⓎ

*/
const charmap={
    '⍺':['a'],
    '⍶':['_a'],
    '⍵':['w'],
    '⍹':['_w'],
    '∊':['e'],
    '⍷':['_e'],
    '⍴':['r'],
    '∼':['t', '~', 'NOT'],
    '⍨':['`~'],
    '⍭':['~|', '|~', '|t'],
    '↑':['y', 'TAKE'],
    '⍏':['-y'],
    '↓':['u', 'DROP'],
    '⍖':['-u'],
    '⍳':['i', 'INDEX'],
    '⍸':['_i'],
    '○':['o', '()', 'CIRC'],
    '⍥':['`o', '(")', '`()', '(``)'],
    '⋆':['p'],
    '⍣':['`*', '`p'],
    '⍟':['(*)', '(p)'],
    '⌈':['s', 'MAX', 'CEIL'],
    '⌊':['d', 'MIN', 'FLOOR'],
    '∇':['g', 'DEL', 'FN'],
    '⍫':['~g'],
    '⍢':['`g'],
    '⍒':['|g', 'DESC'],
    '∆':['h', 'DELTA'],
    '⍙':['_h'],
    '⍋':['|h', 'ASC'],
    '∘':['j', '@', 'JOT'], 
    '⍤':['`j', '`@', 'RANK'],
    '⎕':['l', '[]', 'QUAD'],
    '⍞':["[']"],
    '⌷':[']', 'SQUISH'],
    '⍠':['[:]'],
    '⌸':['[=]'],
    '⍁':['[/]'],
    '⍂':['[\\]'],
    '⌺':['[<>]'],
    '⍰':['[?]'],
    '⌹':['[%]'],
    '⌻':['[j]', '[@]'],
    '⌼':['[o]', '[()]'],
    '⍯':['[|=]', '[!=]', '[/=]'],
    '⍃':['[<]'],
    '⍄':['[>]'],
    '⍌':['[V]'],
    '⍓':['[^]'],
    '⍇':['[<-]'],
    '⍈':['[->]'],
    '⍐':['[y]'],
    '⍗':['[u]'],
    '⍔':['[g]'],
    '⍍':['[h]'],
    '⊂':['z'],
    '⊆':['_z'],
    '⊃':['x'],
    '⊇':['_x'],
    '∩':['c'],
    '⍝':['@c', 'REM', 'BULB'],
    '⋔':['|c'],
    '∪':['v'],
    '⍦':['|v'],
    '⊥':['b', '_|_', '|_', '_|', '_L'],
    '⍎':['@b', '@_L', 'EVAL', 'EXEC'],
    '⍊':['_b'],
    '⊤':['T', 'n'],
    '⍕':['@T', '@n', 'FMT', 'FORMAT'],
    '⍡':['`T', '`n'],
    '⍑':['-T', '-n', '_n', '_T'],
    '⊢':['|-'],
    '⊣':['-|'],
    '¯':['-'],
    '∞':['INF', '8'],
    '⍬':['~0'],
    '⌶':['I', 'IBEAM'],
    '⍩':['`>', '>"'],
    '«':['<<'],
    '»':['>>'],
    '≤':['<='],
    '≥':['>='],
    '≠':['|=', '!=', '/='],
    '≡':['=='],
    '≢':['#', '|==', '!=='],
    '⍀':['-\\'],
    '⌿':['-/'],
    '×':['*', '><', 'MUL', 'X', '+'],
    '÷':['/', '%', 'DIV'],
    '←':['<-'],
    '⍅':['<+', '|<-', '<|-'],
    '→':['->', 'GOTO'],
    '⍆':['+>', '|->', '-|>'],
    '¨':['"', '`', '..', ':'],
    '∵':['`.'],
    '⌽':['(|)'],
    '⍉':['(\\)'],
    '⊖':['(-)'],
    '∨':['OR',   '\\/',  'V'],
    '⍱':['NOR', '~\\/', '~V'],
    '∧':['AND',  '/\\',  '^'],
    '⍲':['NAND','~/\\', '~^'],
    '√':['ROOT'],
    'π':['PI'],
    'λ':['LAMBDA', 'LAMDA'],
    'χ':['AXIS', 'CHI'],
    '⍮':['_;'],
    '⍛':['_j'],
    '⍜':['_o'],
    '⍪':['-,'],
    '⍚':['_<>'],
    '⋄':['<>', ';'],
    '⊙':['(.)'],
    '⌾':['(j)', '(@)'],
    //і т.д. ......
    '`':[' ']
    };
    // Ⓐ...Ⓩ:
    for(i='A', j='Ⓐ'; i<='Z'; 
            i=String.fromCharCode(i.charCodeAt(0)+1),
            j=String.fromCharCode(j.charCodeAt(0)+1))
        charmap[j]=['_'+i+'_'];

//tranToAPL={'w':'⍵', '∘':'j', '∘':'@'...}
tranToAPL={};
tranlist=[];
for(i in charmap)
    {
    transl=charmap[i];
    for(j in transl)
        {
        tranToAPL['`'+transl[j]]=i;
        tranlist.push(transl[j]);
        }
    }
// згенерувати регекс для пошуку:
//tranlist - повний список усіх позначень
//відсортувати, щоб довші були першими:
tranlist.sort(function(a,b){return b.length-a.length});
//console.log(tranlist);
//заескейпити спецсимволи ().*?[]\ 
reToAPL='`(';
for(i in tranlist)
    reToAPL+=tranlist[i].replace(/([\\\[\]\)\(\.\*\?\|\{\}\+])/g, '\\$1')+
    (i<tranlist.length-1?'|':')|.');
//reToAPL=/`(LONGEST|MID|[1chr])|./ :
//console.log(reToAPL);
reToAPL=new RegExp(reToAPL, 'g');

tranFromAPL={};
for(i in charmap)
    tranFromAPL[i]=charmap[i][0];

function pseudo2apl(s)
    {
    //розгорнути підкреслені групи літер `_A_B_C_=>`_A_`_B_`_C_.....
    while(/`_[A-Z]_[A-Z]_/ .test(s))
        s=s.replace(/`_([A-Z])_([A-Z])_/g, '`_$1_`_$2_');
    //знайти й замінити: 
    s=s.match(reToAPL);
    //console.log(s);
    res=''
    for(i in s)
        if(repr=tranToAPL[s[i]])
            res+=repr;
        else res+=s[i];
    return res;
    }
function apl2pseudo(s)
    {
    res='';
    for(i in s)
        if(tr=charmap[s[i]])
            res+='`'+tr[0];
        else    res+=s[i];
    s=res
    //`_A_`_B_ => `_A_B_....
    while(/`(_[A-Z])+_`_[A-Z]_/ .test(s))
        s=s.replace(/`((_[A-Z])+)_`_([A-Z])_/g, '`$1_$3_');
    return s;
    }
    
/* test 
console.log(t=apl2pseudo('∘.×⍨⍳10 ⍝ ``Pythagorean table"'));
console.log(pseudo2apl(t));
console.log(pseudo2apl('`@c 2`MUL2`!=5'));
/* end test */

var toTranslit=false;
process.argv.slice(2).forEach(function(arg)
    {
    // -t --to-translit
    if (arg==='-t'|arg==='--to-translit')
        toTranslit=true;
    // -u --to-unicode
    else if (arg==='-u'|arg==='--to-unicode')
        toTranslit=false;
    });
translate=toTranslit? apl2pseudo: pseudo2apl;

processLine=function(s)
    {
    process.stdout.write(translate(s)+'\n');
    }

process.stdin.resume();
process.stdin.setEncoding('utf8');

var lingeringLine = "";

process.stdin.on('data', function(chunk) 
    {
    lines = chunk.split("\n");
    
    lines[0] = lingeringLine + lines[0];
    lingeringLine = lines.pop();
    
    lines.forEach(processLine);
    });

process.stdin.on('end', function() 
    {
    if(lingeringLine!=='')
        processLine(lingeringLine);
    });

// I/O.....