def sol(a,b,c,s):
    if a>0 and b>1:
        sol(a-1,b-2,c,s+3)
    if b>0 and c>1:
        sol(a,b-1,c-2,s+3)
    ans[0]=max(ans[0],s)
    return ans[0]
ans=[0]
#print sol(7,3,10,0)

for _ in range(input()):
    l=map(int,raw_input().split())
    '''s=0
    ans=0
    for i in range(a):
        x,y,z=a,b,c
        if b>1:
            s+=3
            a=a-i
            b=b-(i*2)
            t=min(z/2,y)
            s=t*3
            y-=t
            z-=2*t
            t=min(y/2,x)
            s+=t*3
            x-=t
            y-=2*t
            ans=max(s,ans)
    print ans'''
    print min(l)*3
            
