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| Easy | Medium | Hard | |
| #1 | 0x1p | 2x1p | 4x1p |
| #2 | 0x2p | 2x2p | 4x2p |
| #3 | 0x3p | 2x3p | 4x3p |
| #4 | 0x4p | 2x4p | 4x4p |
| #5 | 0x5p | 2x5p | 4x5p |
| #6 | 0x6p | 2x6p | 4x6p |
| #7 | 0x7p | 2x7p | 4x7p |
| #8 | 0x8p | 2x8p | 4x8p |
| #9 | 0x9p | 2x9p | 4x9p |
| #10 | 1x0p | 3x0p | 5x0p |
| #11 | 1x1p | 3x1p | 5x1p |
| #12 | 1x2p | 3x2p | 5x2p |
| #13 | 1x3p | 3x3p | 5x3p |
| #14 | 1x4p | 3x4p | 5x4p |
| #15 | 1x5p | 3x5p | 5x5p |
| #16 | 1x6p | 3x6p | 5x6p |
| #17 | 1x7p | 3x7p | 5x7p |
| #18 | 1x8p | 3x8p | 5x8p |
| #19 | 1x9p | 3x9p | 5x9p |
| #20 | 2x0p | 4x0p | 6x0p |
