"Could I have some examples of the letters pronounced with clear oral articulation idhhar shafawi? "

All letters are pronounced with clear oral articulation (idhhar shafawi) when they occur after a silent Meem, except for the Baa; its rule is oral concealment (ikhfa shafawi), and for the Meem itself, its rule is idgham al-mithlain as-saghir (small identical merging). And one should exaggerate the clarity of pronunciation with the letters Waw and Faa, so that the Meem is not merged into the Waw, or the Meem is concealed into the Faa.