$ perl -Mstrict -Mwarnings -e '
    my $sheet = {F35 => 1, G35 => 2, H35 => 3, I35 => 4, J35 => 5, K35 => 6};
    my @mycols = "F" .. "K";
    my @cells;
    for (@mycols) {
        push @cells, $sheet->{$_ . 35};
    }
    print "@cells\n";
'
1 2 3 4 5 6