| RR2 |
| R+R2 |
| RR2+RR1+R1R2 |
| R+R2 |
| 3R+2 |
| R+1 |
| U |
| R总 |
| R+1 |
| 3R+2 |
| R+1 |
| 3R+2 |
| R |
| R+1 |
| R |
| 3R+2 |
| U并 |
| R |
| 1 |
| 3R+2 |
| U并 |
| R2 |
| R |
| 3R+2 |
| R+1 |
| 3R+2 |
| R′+1 |
| 3R′+2 |
| R′-R |
| (3R+2)×(3R′+2) |
| 1 |
| 3R+2 |
| 1 |
| 3R′+2 |
| 3(R′-R) |
| (3R+2)×(3R′+2) |
| R |
| 3R+2 |
| R′ |
| 3R′+2 |
| 2(R′-R) |
| (3R+2)×(3R′+2) |
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