1 #include<stdio.h>
 2 #include<string.h>
 3 #include<algorithm>
 4 using namespace std;
 5 int up[1005][1005],down[1005][1005],l1[1005][1005],r1[1005][1005],l2[1005][1005],r2[1005][1005];
 6 char s[1005][1005],ss[1005];
 7 int main()
 8 {
 9     int T,n,m,i,j,maxx,x;
10     scanf("%d",&T);
11     while (T--)
12     {
13         scanf("%d%d",&m,&n);
14         getchar();
15         for (i=1;i<=m;i++)
16             for (j=1;j<=n;j++){
17                 scanf("%s",&ss);
18                 s[i][j]=ss[0];
19             }
20         maxx=0;
21         memset(up,0,sizeof(up));
22         memset(down,0,sizeof(down));
23         for (i=1;i<=m;i++)
24             for (j=1;j<=n;j++)
25             if (s[i][j]=='F') up[i][j]=up[i-1][j]+1;
26         for (i=m;i>=1;i--)
27             for (j=1;j<=n;j++)
28             if (s[i][j]=='F') down[i][j]=down[i+1][j]+1;
29
30         for (i=1;i<=m;i++)
31         {
32             l1[i][1]=1;  r1[i][n]=n;
33             for (j=2;j<=n;j++)
34             {
35                 x=j;
36                 while (x>1&&up[i][x-1]>=up[i][j]) x=l1[i][x-1];
37                 l1[i][j]=x;
38             }
39             for (j=n-1;j>=1;j--)
40             {
41                 x=j;
42                 while (x<n&&up[i][x+1]>=up[i][j]) x=r1[i][x+1];
43                 r1[i][j]=x;
44             }
45
46             l2[i][1]=1;  r2[i][n]=n;
47             for (j=2;j<=n;j++)
48             {
49                 x=j;
50                 while (x>1&&down[i][x-1]>=down[i][j]) x=l2[i][x-1];
51                 l2[i][j]=x;
52             }
53             for (j=n-1;j>=1;j--)
54             {
55                 x=j;
56                 while (x<n&&down[i][x+1]>=down[i][j]) x=r2[i][x+1];
57                 r2[i][j]=x;
58             }
59             for (j=1;j<=n;j++)
60             {
61                 x=(up[i][j]+down[i][j]-1)*(min(r1[i][j],r2[i][j])-max(l1[i][j],l2[i][j])+1);
62                 if (x>maxx) maxx=x;
63             }
64         }
65         printf("%d\n",maxx*3);
66     }
67 }