Speech Difficulties in Down Syndrome. Down syndrome (DS) is an incurable genetic disorder that has a profound impact upon a personâs physical, mental, and social development. Children with DS have anatomical and physiological differences in the mouth and throat region that affect feeding, swallowing, and oral motor skills.
1 A gross refers to a group of 144 items (a dozen dozen or a square dozen).  A great gross refers to a group of 1728 items (a dozen gross or a cubic dozen).
Centipedes are sometimes called hundred-leggers because of their many pairs of legs, but they can actually have anywhere from 15-177 pairs of legs, depending on the species. Interestingly, centipedes always have an odd number of pairs of legs.