#include <iostream>
#include <cstring>
using namespace std;
int st[11],n,c[5]={0,5,4,5,5};
char cuv[5][7]={"","AEIOU","PRST","BMRTV","AEIOU"};
void tipar(int k)
{
for(int i=1;i<=k;i++)
cout<<cuv[i][st[i]-1];
cout<<endl;
}
int solutie(int k)
{
return (k==n);
}
int valid (int k)
{
if(k==3 && cuv[3][st[k]-1]==cuv[2][st[2]-1])
return 0;
if(k==4 && cuv[4][st[k]]==cuv[1][st[1]])
return 0;
return 1;
}
void bktr()
{
int k=1;
st[k]=0;
while(k)
{
if(st[k]<c[k])
{
st[k]++;
if(valid(k))
if(solutie(k))
tipar(k);
else
{
k++;
st[k]=0;
}
}
else
k--;
}
}
int main()
{
n=4;
bktr();
return 0;
}
{"html5":"htmlmixed","css":"css","javascript":"javascript","php":"php","python":"python","ruby":"ruby","lua":"text\/x-lua","bash":"text\/x-sh","go":"go","c":"text\/x-csrc","cpp":"text\/x-c++src","diff":"diff","latex":"stex","sql":"sql","xml":"xml","apl":"apl","asterisk":"asterisk","c_loadrunner":"text\/x-csrc","c_mac":"text\/x-csrc","coffeescript":"text\/x-coffeescript","csharp":"text\/x-csharp","d":"d","ecmascript":"javascript","erlang":"erlang","groovy":"text\/x-groovy","haskell":"text\/x-haskell","haxe":"text\/x-haxe","html4strict":"htmlmixed","java":"text\/x-java","java5":"text\/x-java","jquery":"javascript","mirc":"mirc","mysql":"sql","ocaml":"text\/x-ocaml","pascal":"text\/x-pascal","perl":"perl","perl6":"perl","plsql":"sql","properties":"text\/x-properties","q":"text\/x-q","scala":"scala","scheme":"text\/x-scheme","tcl":"text\/x-tcl","vb":"text\/x-vb","verilog":"text\/x-verilog","yaml":"text\/x-yaml","z80":"text\/x-z80"}