Regex pattern in c#

Question

hi,

I am having a passage as follows:

passage:

Sphingolipids are normally degraded by lysosomal enzymes. If these enzymes are deficient, partially degraded sphingolipids accumulate in cells, compromising cell function. Death may result. An a-galactosidase is deficient in Fabry's disease, a ß-glucosidase in Gaucher's disease, a sphingomyelinase in Neimann-Pick disease, and a hexosaminidase in Tay-Sachs disease. These diseases are known as thesphingolipidoses, organgliosidoses.Tay sach disease is so injurious.Taysach may be harmful.

In the passage hyphenated word(Tay-Sachs ) seperated by space(Tay sach) and (Taysach) needs to be found using a REGEX pattern.please help me out!