Mullingar
Nudge 1 - I found the royal link misleading and superfluous to the PDM
Nudge 2 - See hw7 @ post 48
Nudge 3 - Google the fist two words from D study the grid
Nudge 4 - as I stated earlier, picture is unhelpful, a different word would
have reduced the grief it gave me by @ least 90%
Nudge 5 - google/wiki A & B and apply the D instruction
That is what led to my PDM - but it took a long time coming