if ((((p-1)<0) || ((q-1)<0)) && entrar) //it returns to here
{
NoMudancas NovoNo = new NoMudancas(Palavra2Copia, Palavra1Copia, (TamPort-Palavra1Copia.length()));//eventually after this instruction, and
regras.add(NovoNo); //frequently after this instruction
Palavra2Copia = "";
Palavra1Copia = "";
}