Decipher A Phrase Using Our Tricky Code Below: O - 2 A - 5 T + 3 D + 6 B + 4 U + 5 P + 2 C - 2 January 8th Answer: 6 2 1 2 7 9. The only possible combinations for the first four digits that match the first three conditions are: 6212, 7321, 8432, and 9545. These last two can be eliminated since you create a two-digit number when you add their first and third digits. So the first five digits have to be either 62127 or 73219. We can eliminate 73219 since the sum of its fourth and fifth digits is too large. Congratulations to BigBlue and Rokapoke for getting it.