| Process | No. of graphs (1-loop x tree) |
| aatt |
267x2 |
| aaww |
619x5 |
| eeee |
288x4 |
| eehz |
341x3 |
| eenn |
112x3 |
| eett |
150x4 |
| eeww |
334x4 |
| eezz |
336x3 |
| hhhh |
805x4 |
| hwhw |
827x6 |
| mnwa |
162x3 |
| mnwh |
196x3 |
| mnwz |
213x4 |
| nnnn |
46x2 |
| tbwa |
239x4 |
| tbwh |
285x4 |
| tbwz |
284x4 |
| wwtt |
354x4 |
| wwww |
925x7 |
| zaww |
680x5 |
| zhtt |
355x4 |
| zhww |
823x5 |
| zhzh |
830x6 |
| zwzw |
840x6 |
| zztt |
338x3 |
| zzzz |
657x3 |