Such combinations rarely occur but when they do there are often opportunities for very profitable trades

Can you repeat this sentence, but add in punctuation?
Such combinations rarely occur, but when they do, there are often opportunities for very profitable trades.
input: But a business feasibility report or plan is much more detailed
fixed: But a business feasibility report or plan is much more detailed.
input ---- But for your bad luck you got the same error message that wont let you to play your recorded video file
output ---- But for your bad luck you got the same error message that won't let you to play your recorded video file.
Add punctuation: 4815 I even I have spoken yes I have called him I have brought him and he shall make his way prosperous
A: 48:15 I, even I, have spoken; yes, I have called him; I have brought him, and he shall make his way prosperous.
QUESTION: Fix punctuation: Most speciems have a calm temper but there are also a few that can be very aggressive
ANS: Most speciems have a calm temper, but there are also a few, that can be very aggressive.
input ---- A number of medical professionals and citizens with chronic diseases will be educated and trained to use eHealth technologies in the prevention and treatment of chronic diseases through an educational pilot programme that will take place in some of the participating regions
output ----
A number of medical professionals and citizens with chronic diseases will be educated and trained to use eHealth technologies in the prevention and treatment of chronic diseases through an educational pilot programme that will take place in some of the participating regions.