T=gets.to_i
T.times do |i|
    a,b,c,x,y,z=gets.split.map(&:to_i)
    if [a,b,c].max<=2 || (a==1 && a==b) || (b==1 && b==c) || (c==1 && c==a)
        puts -1
        next
    end
    x,z=z,x if c<a
    a,c=c,a if c<a
    u=[x,z].min
    v=[x,z].max
    if a==b && b==c
        if a<=2
            puts -1
        elsif 3<=a
            puts 2*u+v
        end
    elsif a==b && b<c
        if 3<=b
            puts [2*x+(c-b+2)*z,y].min
        else
            puts y
        end
    elsif a<b && b==c
        if a+1==b
            puts [2*y,2*z].min
        else
            if a==1
                puts z
            else
                puts [z,(b-a+1)*y].min
            end
        end
    elsif a==c && c<b
        puts u
    elsif b<a && a==c
        if b+1==a
            puts 2*u
        else
            puts u
        end
    elsif a<b && b<c
        if a==1
            if b==2
                puts -1
            else
                puts (c-b+1)*z
            end
        else 
            puts [(b-a+1)*y,(c-b+1)*z].min
        end
    else
        puts 0
    end
end