- A + B + C + D + E is a multiple of 6.
- F + G + H + I + J is a multiple of 5.
- A + C + E + G + I is a multiple of 9.
- B + D + F + H + J is a multiple of 2.
- AB is a multiple of 3.
- CD is a multiple of 4.
- EF is a multiple of 7.
- GH is a multiple of 8.
- IJ is a multiple of 10.
- FE, HC, and JA are all prime numbers.