Let’s have a look at how the consonants sgr are pronounced in Gaelic.
In Gaelic, sgr has two distinct sounds, depending on whether it occurs next to a broad vowel (a, o, u) or a slender vowel (e, i). The broad sgr can be heard in sgròb (a scratch):
The broad sgr sound can also be heard in sgrùdadh (an investigation):
a good investigation
The slender sgr can be heard in sgrìobh (wrote):
I wrote a letter
The slender sgr can also be heard in sgriubha (a screw):
a small screw