Like "drilling" without the tschoo tschoo sound you yanks so.
Take out the gum and articulate.
Use the word "krill" for practice - the plankton biomass whales feast on.
First step: "kill" than add the "r" without any extraordninars vocal side effects.
krill, krill, krill...
then swap the "k" for the "d" without any other change.
While I am at it, let me try to explain how the color "blue" smells...
(satire and no harm intended)