if ($col6 =~ /^\Q97517\E/ }
    elsif
 $col6 =~ /^\Q97516\E/))

##</code><code>##

if (CONDITION) {
    ACTION_WHEN_CONDITION_IS_TRUE
}

##</code><code>##

elsif (ALTERNATIVE_CONDITION) {
    ACTION_WHEN_ALTERNATIVE_CONDITION_IS_TRUE
}

##</code><code>##

else {
    ACTION_WHEN_CONDITION_IS_FALSE
}

##</code><code>##

ACTION_WHEN_CONDITION_IS_TRUE if CONDITION;