Any idea of marking open and close of real price on heiken ashi candles?

Any idea of marking open and close of real price on heiken ashi candles? I am actually struggling to get this done. Heiken ashi candles do not show the real open and close. Having a bar chart is no use since Heiken Ashi candles are plotted on the original bar charts, with its body frequently covering open and close as well as vertical line of a bar, which is a trouble to me.

I hope I can seek some advice about dat. 

Thank you