BZ_RUNA
mtfv[wr] = BZ_RUNA; wr++;
s->mtfFreq[BZ_RUNA]++;
mtfv[wr] = BZ_RUNA; wr++;
s->mtfFreq[BZ_RUNA]++;
if (nextSym == BZ_RUNA || nextSym == BZ_RUNB) {
if (nextSym == BZ_RUNA) es = es + (0+1) * N; else
while (nextSym == BZ_RUNA || nextSym == BZ_RUNB);