The idea that the VM might contain Roman numerals suggests some approaches for trying to find them based on these properties:
- there is a limited set of symbols (I, V, X, L, C, D. M) - the VM symbols that represent them should occur together frequently, not separated by other symbols - some would be repeated but others not ( ..XXX.. is legal but not ..VVV.. ) - some combinations are permitted in one order but not the other ( ..CV.. is legal but not ..VC.. )