# 20210809 Raku programming solution
for (grep {.is-prime}, 3..*).rotor(2 => -1) -> (\P1,\P2) {
last if P2 ≥ Ⅽ;
($_ = P1+P2-1).is-prime and printf "%2d, %2d => %3d\n", P1, P2, $_
}
3, 5 => 7
5, 7 => 11
7, 11 => 17
11, 13 => 23
13, 17 => 29
19, 23 => 41
29, 31 => 59
31, 37 => 67
41, 43 => 83
43, 47 => 89
61, 67 => 127
67, 71 => 137
73, 79 => 151