BEGIN {
    tags[0] = 0
}

function size() {return 0}

$1 == "tag" {
    tags[size()] = tags[0]+1
    tags[tags[0]] = $2
    tags[0] = tags[0]+1
    tags[tags[0]] = $3

    for(i = 1; i <= $4; i++)
        print $2, i, $5, tags[0]
    next
}

    { #no match
    print $0
}

END {
    if (tags[0] > 0) {
        printf "tags"
        for (i = 1; i <= tags[size()]; i++) {
            printf " " tags[i]
        }
    }
}