l_add_tail
l_add_tail(q->es, q->qs + e->level, e);
l_add_tail(q->es, l, e);
l_add_tail(q->es, l_above, e);
l_add_tail(ea->es, &ea->free, __get_entry(ea->es, i));
l_add_tail(ea->es, &ea->free, e);