>>A 000
>>B 001
>>C 002
>>D 010
>>E 011
>>F 012
>>G 020
>>H 021
>>I 100
>>J 022
>>K 101
>>L 102
>>M 110
>>N 111
>>O 120
>>P 121
>>Q 200
>>R 201
>>S 202
>>T 210
>>U 211
>>V 221
>>W 212
>>X 220
>>Y 222
>>Z 122
>>$ 112
>>
>>Not sure of accuracy...
>
>is this 010 like 3#010 same value as decimal 3?

Doesn't look like proper ternary system. In ternary, the largest number is 3#222=10#(2*9+2*3+2)=10#26, so Z should be 221 and $ 222. Unless someone deliberately put Y at the end, and Z between P and Q, this seems to be out of order.