#include <stdio.h>

int main () {
  int t = 0;
  
  int res = 0;
  
  res = scanf("%d", &t);
  while (t > 0) {
    int a = 0;
    int b = 0;
    int c = 0;
    long long x = 0LL;
    long long y = 0LL;
    long long z = 0LL;
    long long w = 0LL;
    long long ans = 0LL;
    res = scanf("%d", &a);
    res = scanf("%d", &b);
    res = scanf("%d", &c);
    res = scanf("%lld", &x);
    res = scanf("%lld", &y);
    res = scanf("%lld", &z);
    res = scanf("%lld", &w);
    for (int i = 0; (i <= a && i <= b && i <= c); i++) {
      long long tmp = 0LL;
      if (2LL*w >= x+y+z) {
        tmp = w*((long long)i);
      } else {
        tmp = w*((long long)(i%2))+(x+y+z)*((long long)(i/2));
      }
      if (x > y) {
        long long tmptmp = 0LL;
        if (a > b) {
          tmptmp = x*((long long)(b-i));
        } else {
          tmptmp = x*((long long)(a-i));
          if (b-a < c-i) {
            tmptmp += y*((long long)(b-a));
          } else {
            tmptmp += y*((long long)(c-i));
          }
        }
        if (tmp+tmptmp > ans) {
          ans = tmp+tmptmp;
        }
      } else {
        long long tmptmp = 0LL;
        if (c > b) {
          tmptmp = y*((long long)(b-i));
        } else {
          tmptmp = y*((long long)(c-i));
          if (b-c < a-i) {
            tmptmp += x*((long long)(b-c));
          } else {
            tmptmp += x*((long long)(a-i));
          }
        }
        if (tmp+tmptmp > ans) {
          ans = tmp+tmptmp;
        }
      }
      if (y > z) {
        long long tmptmp = 0LL;
        if (b > c) {
          tmptmp = y*((long long)(c-i));
        } else {
          tmptmp = y*((long long)(b-i));
          if (c-b < a-i) {
            tmptmp += z*((long long)(c-b));
          } else {
            tmptmp += z*((long long)(a-i));
          }
        }
        if (tmp+tmptmp > ans) {
          ans = tmp+tmptmp;
        }
      } else {
        long long tmptmp = 0LL;
        if (a > c) {
          tmptmp = z*((long long)(c-i));
        } else {
          tmptmp = z*((long long)(a-i));
          if (c-a < b-i) {
            tmptmp += y*((long long)(c-a));
          } else {
            tmptmp += y*((long long)(b-i));
          }
        }
        if (tmp+tmptmp > ans) {
          ans = tmp+tmptmp;
        }
      }
      if (z > x) {
        long long tmptmp = 0LL;
        if (c > a) {
          tmptmp = z*((long long)(a-i));
        } else {
          tmptmp = z*((long long)(c-i));
          if (a-c < b-i) {
            tmptmp += x*((long long)(a-c));
          } else {
            tmptmp += x*((long long)(b-i));
          }
        }
        if (tmp+tmptmp > ans) {
          ans = tmp+tmptmp;
        }
      } else {
        long long tmptmp = 0LL;
        if (b > a) {
          tmptmp = x*((long long)(a-i));
        } else {
          tmptmp = x*((long long)(b-i));
          if (a-b < c-i) {
            tmptmp += z*((long long)(a-b));
          } else {
            tmptmp += z*((long long)(c-i));
          }
        }
        if (tmp+tmptmp > ans) {
          ans = tmp+tmptmp;
        }
      }
    }
    printf("%lld\n", ans);
    t--;
  }
  
  return 0;
}