a={case[],s->""
case[x],s->" "+x
case[x,*y],s->x+" "+s+a(y,s)}
j={case[]->""
case[x,*y]->x+j(y)}
f={n->{x->a(split(x,n),n)}}
stdin|f("0")|f("1")|f("2")|f("3")|f("4")|f("5")|f("6")|f("7")|f("8")|f("9")|{x->j(sort(split(x)))}|stdout