#include<bits/stdc++.h>
#define ll long long
using namespace std;
int c[10];
int main(){
int T;cin>>T;
while(T--){
int x,y;cin>>x>>y;
for(int i=1;i<=6;i++) cin>>c[i];
ll ans=0;
c[1]=min(c[1],c[6]+c[2]);
c[2]=min(c[2],c[1]+c[3]);
c[3]=min(c[3],c[2]+c[4]);
c[4]=min(c[4],c[3]+c[5]);
c[5]=min(c[5],c[4]+c[6]);
c[6]=min(c[6],c[5]+c[1]);
c[1]=min(c[1],c[6]+c[2]);
c[2]=min(c[2],c[1]+c[3]);
c[3]=min(c[3],c[2]+c[4]);
c[4]=min(c[4],c[3]+c[5]);
c[5]=min(c[5],c[4]+c[6]);
c[6]=min(c[6],c[5]+c[1]);
if(x>=0&&y>=0){
if(x>=y){
ans=ans+1ll*y*c[1]+1ll*(x-y)*c[6];
}
else ans=ans+1ll*x*c[1]+1ll*(y-x)*c[2];
}
else if(x>=0&&y<=0){
ans=ans+1ll*x*c[6]+1ll*(-y)*c[5];
}
else if(x<=0&&y>=0){
ans=ans+1ll*(-x)*c[3]+1ll*y*c[2];
}
else{
x=-x;y=-y;
if(x>=y){
ans=ans+1ll*y*c[4]+1ll*(x-y)*c[3];
}
else ans=ans+1ll*x*c[4]+1ll*(y-x)*c[5];
}
printf("%lld\n",ans);
}
return 0;
}
