Add punctuation: Developer profile Amateur
A: Developer profile - Amateur

Add punctuation: The average number of stable isotopes increases with proton number reaching a peak for proton number 50 Tin and declines generally thereafter as shown in the table below
A: The average number of stable isotopes increases with proton number reaching a peak for proton number 50 (Tin) and declines generally thereafter, as shown in the table below.

Add punctuation: black group orgy vintage
A:
black, group, orgy, vintage