clear
input id age age1 age2 age3 age4 age5
10101 23 15 24 27 18 19
10102 16 8 14 3 . 23
10103 17 13 14 10 . .
end
rename age age0
reshape long age,i(id) j(pid)
drop if age==.
gsort +id -age
bysort id : gen order=_n
list


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