text: var shallowClone = require('./clone').shallow;
  
  var MULTIPLEX_SEPARATOR = ',';
  
  function everyCombination(fn, left, right, validator) {
    var samePositon = !left.shorthand && !right.shorthand && !left.multiplex && !right.multiplex;
    var _left = shallowClone(left);
    var _right = shallowClone(right);
  
    for (var i = 0, l = left.value.length; i < l; i++) {
      for (var j = 0, m = right.value.length; j < m; j++) {
        if (left.value[i][0] == MULTIPLEX_SEPARATOR || right.value[j][0] == MULTIPLEX_SEPARATOR)
          continue;
  
        if (samePositon && i != j)
          continue;
  
        _left.value = [left.value[i]];
        _right.value = [right.value[j]];
        if (!fn(_left, _right, validator))
          return false;
      }
    }
  
    return true;
  }
  
  module.exports = everyCombination;
  