Answer:
These are numbers in base twelve. They are expressed using
groupings of units, twelves, (twelve)^{2} and so on.
In addition to the digits 0,1,2, …..,9 two further symbols
are required for ten and eleven, usually taken as T and E.
Languages using duodecimal number systems are uncommon.
Then for example,
32E_{twelve} = (3 x 144_{ten}) + (2 x 12_{ten}) + 11_{ten} = 467_{ten}
