class Line {
    has $.str handles 'words';
    method Str { self.words.reverse.join(' ') }
}
multi infix:<cmp>(Line $a, Line $b) {
    $a.words[*-1] <=> $b.words[*-1]
        || $a.words[0] <=> $b.words[0];
}


print lines().map({Line.new(str => $_)}).grep(/SRC1/).sort;