Paste the output of the command that shuffles the numbers 1-10 into 5 random numbers, followed by the output of the command that shuffles the numbers 6-20 into 5 random numbers, separated by a semicolon.
paste -d";" <(printf "%s\n" $(shuf -i 1-10 -n 5)) <(printf "%s\n" $(shuf -i 6-20 -n 5))