Twin primes by *yuko*

program-id.y.data division.working-storage section.
1 k pic 9999.
1 i pic 9999.
1 j pic 9999 value 2.procedure division.a.add 1 to k
if 0<function mod(i*j,k)go a.if k=i display
i(4- function log10(i):)","j(4- function log10(j):).if i<1997
add 1 to i j
move 2 to k
go a.

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