code: function generateSequence(pattern, parity, check) {
    if (pattern.length !== 6) {
      return null;
    }
  
    check = parseInt(check);
    parity = parseInt(parity);
  
    var p = PAIRITYMAP[check][parity],
      seq = START;
  
    for (var i = 0; i < 6; i++) {
      seq = seq.concat( BARMAP[ p[i] ][ parseInt(pattern[i]) ] );
    }
  
    return seq.concat(END);
  }
docs: /*
  generate sequence
  @param String pattern
  @param Number parity
  @param Number check