Graph1
1:  2  3  4  5 
2:  1  5  6  7 
3:  1  7  8  9 
4:  1  9  10  11 
5:  1  11  12  2 
6:  2  12  13  7 
7:  2  6  8  3 
8:  3  7  13  14 
9:  3  14  10  4 
10:  4  9  15  16 
11:  4  16  17  5 
12:  5  17  18  6 
13:  6  18  19  8 
14:  8  19  15  9 
15:  10  14  20  21 
16:  10  21  22  11 
17:  11  22  23  12 
18:  12  23  24  13 
19:  13  24  20  14 
20:  15  19  25  21 
21:  15  20  22  16 
22:  16  21  25  17 
23:  17  25  24  18 
24:  18  23  25  19 
25:  20  24  23  22 

Graph2
1:  2  3  4  5 
2:  1  5  6  7 
3:  1  7  8  4 
4:  1  3  9  10 
5:  1  10  11  2 
6:  2  11  12  13 
7:  2  13  14  3 
8:  3  14  15  9 
9:  4  8  16  10 
10:  4  9  17  5 
11:  5  17  18  6 
12:  6  18  19  20 
13:  6  20  21  7 
14:  7  21  22  8 
15:  8  22  23  16 
16:  9  15  24  17 
17:  10  16  18  11 
18:  11  17  24  12 
19:  12  24  23  25 
20:  12  25  21  13 
21:  13  20  22  14 
22:  14  21  25  15 
23:  15  25  19  24 
24:  16  23  19  18 
25:  19  23  22  20 

Graph3
1:  2  3  4  5 
2:  1  5  6  7 
3:  1  7  8  9 
4:  1  9  10  5 
5:  1  4  11  2 
6:  2  11  12  13 
7:  2  13  8  3 
8:  3  7  14  15 
9:  3  15  16  4 
10:  4  16  17  11 
11:  5  10  18  6 
12:  6  18  19  20 
13:  6  20  14  7 
14:  8  13  21  22 
15:  8  22  16  9 
16:  9  15  23  10 
17:  10  23  24  18 
18:  11  17  24  12 
19:  12  24  25  20 
20:  12  19  21  13 
21:  14  20  25  22 
22:  14  21  23  15 
23:  16  22  25  17 
24:  17  25  19  18 
25:  19  24  23  21 

Graph4
1:  2  3  4  5 
2:  1  5  6  3 
3:  1  2  7  8 
4:  1  8  9  10 
5:  1  10  11  2 
6:  2  11  12  7 
7:  3  6  13  8 
8:  3  7  14  4 
9:  4  14  15  16 
10:  4  16  17  5 
11:  5  17  18  6 
12:  6  18  19  13 
13:  7  12  20  14 
14:  8  13  20  9 
15:  9  20  21  22 
16:  9  22  23  10 
17:  10  23  24  11 
18:  11  24  19  12 
19:  12  18  21  20 
20:  13  19  15  14 
21:  15  19  24  25 
22:  15  25  23  16 
23:  16  22  25  17 
24:  17  25  21  18 
25:  21  24  23  22