words ▁that ▁retain ▁ ▁to ▁this ▁day . ▁ ▁For ▁descri ptions ▁of ▁the ▁sounds ▁and ▁definitions ▁of ▁the ▁terms , ▁follow ▁the ▁links ▁on ▁the ▁head ings . ▁ ▁Notes : ▁▁ ▁All ▁ob stru ents ▁under w ent ▁final - ob stru ent ▁de vo icing ▁as ▁in ▁Old ▁and ▁Modern ▁Dutch . ▁ ▁During ▁the ▁first ▁part ▁of ▁the ▁Middle ▁Dutch ▁period , ▁gem in ated ▁vari eties ▁of ▁most ▁con son ants ▁still ▁occurred . ▁Gem in ated ▁ ▁was ▁a ▁pl os ive ▁, ▁retained ▁in ▁modern ▁Lim burg ish ▁as ▁. ▁▁ ▁were ▁most ▁likely ▁bil ab ial , ▁whereas ▁ ▁were ▁most ▁likely ▁lab iod ental . ▁▁ ▁could ▁have ▁been ▁either ▁dent al ▁ ▁or ▁al ve olar ▁. ▁▁ ▁had ▁a ▁vel ar ▁allo phone ▁ ▁when ▁it ▁occurred ▁before ▁the ▁vel ars ▁. ▁ ▁After ▁, ▁ ▁was ▁realized ▁as ▁a ▁pl os ive ▁. ▁▁ ▁was ▁most ▁likely ▁al ve olar , ▁either ▁a ▁tr ill ▁ ▁or ▁a ▁tap ▁. ▁ ▁V ow els ▁Most ▁notable ▁in ▁the ▁Middle ▁Dutch ▁v owel ▁system , ▁when ▁compared ▁to ▁Old ▁Dutch , ▁is ▁the ▁appearance ▁of ▁ph on em ic ▁rounded ▁front ▁v ow els , ▁and ▁the ▁mer ger ▁of ▁all ▁un str essed ▁short ▁v ow els . ▁ ▁Short ▁v ow els ▁▁ ▁The ▁exact ▁height ▁of ▁ ▁is ▁not ▁certain , ▁and ▁may ▁have ▁varied ▁between ▁actual ▁ ▁and ▁a ▁lower ▁ ▁or ▁even ▁. ▁▁ ▁and ▁ ▁could