/* 1699 */

 #include <iostream>

 #include <sstream>

 #include <string>

 #include <map>

 #include <queue>

 #include <set>

 #include <stack>

 #include <vector>

 #include <deque>

 #include <bitset>

 #include <algorithm>

 #include <cstdio>

 #include <cmath>

 #include <ctime>

 #include <cstring>

 #include <climits>

 #include <cctype>

 #include <cassert>

 #include <functional>

 #include <iterator>

 #include <iomanip>

 using namespace std;

 //#pragma comment(linker,"/STACK:102400000,1024000")

 #define sti                set<int>

 #define stpii            set<pair<int, int> >

 #define mpii            map<int,int>

 #define vi                vector<int>

 #define pii                pair<int,int>

 #define vpii            vector<pair<int,int> >

 #define rep(i, a, n)     for (int i=a;i<n;++i)

 #define per(i, a, n)     for (int i=n-1;i>=a;--i)

 #define clr                clear

 #define pb                 push_back

 #define mp                 make_pair

 #define fir                first

 #define sec                second

 #define all(x)             (x).begin(),(x).end()

 #define SZ(x)             ((int)(x).size())

 #define lson            l, mid, rt<<1

 #define rson            mid+1, r, rt<<1|1

 const int maxn = ;

 const int maxl = ;

 char ss[maxl];

 char s[maxn * maxl];

 char d[maxn * maxl];

 int n, len;

 void solve() {

     int l = ;

     int i, j, k;

     bool flag;

     int ans = ;

     i = ;

     while (i < len) {

         if (s[i]=='/' && s[i+]=='*') {

             j = i;

             i += ;

             flag = false;

             while (i < len) {

                 if (s[i]=='*' && s[i+]=='/') {

                     flag = true;

                     i += ;

                     break;

                 }

                 ++i;

             }

             if (flag) {

                 ++ans;

                 while (j < i) {

                     d[l++] = islower(s[j]) ? s[j]-'a'+'A' : s[j];

                     ++j;

                 }

             } else {

                 i = j;

                 d[l++] = s[i++];

                 d[l++] = s[i++];

             }

         } else if (s[i]=='/' && s[i+]=='/') {

             ++ans;

             while (i<len && s[i]!='\n') {

                 d[l++] = islower(s[i]) ? s[i]-'a'+'A' : s[i];

                 ++i;

             }

         } else {

             d[l++] = s[i++];

         }

     }

     d[l] = '\0';

     printf("%d\n%s\n", ans, d);

 }

 int main() {

     ios::sync_with_stdio(false);

     #ifndef ONLINE_JUDGE

         freopen("data.in", "r", stdin);

         freopen("data.out", "w", stdout);

     #endif

     int t;

     scanf("%d", &t);

     while (t--) {

         scanf("%d%*c", &n);

         len = ;

         rep(i, , n) {

             gets(ss);

             int sslen = strlen(ss);

             rep(j, , sslen)

                 s[len++] = ss[j];

             s[len++] = '\n';

         }

         s[len] = '\0';

         solve();

     }

     #ifndef ONLINE_JUDGE

         printf("time = %d.\n", (int)clock());

     #endif

     return ;

 }