Sort a concatenated sequence

F=(a,b)=>eval("for(n=r=[],v=13,o=a+n+b;v--;a=b,b=t)o+=t=b+a;for(d of o+'0'.repeat(99))(n+=d)>+v&&(r.push(v=n),n='');+v?r:[...o]")

// less golfed

U=(a,b)=>{
  for(n=r=[], o=a+n+b, v=13; v--; a=b, b=t)
    o+= t= b+a;
  for(d of o+'0'.repeat(99))
    if ((n+=d) > +v)
      r.push(v=n), n='';
  return +v ? r : [...o]
}

function test(){
  var i = I.value.match(/\d+/g)
  O.textContent = i.length > 1 ? F(+i[0],+i[1]) : ''
}
test()

A,B : <input id=I value='0 1' oninput='test()'>
<pre id=O></pre>

function s(a, b) {
  d = "" + a + b;
  for (i = -12, j = 1; ++i < 99;)
    i < 2 ?
      (c = b, d += b = a + b, a = c, r = a ? [d[0]] : "0,".repeat(15))
    : (f = +d.slice(j, i)) > r[r.length - 1] ?
      (r.push(f), j = ++i - 1)
      : d += 0;
  return r
}
document.write(
   s(1,1)+"<br>"+
   s(3,2)+"<br>"+
   s(0,0)
)