; formalitiesinput-roman = number / letternumber = c-0 / c-1 / c-2 / c-3 / c-4 / c-5 / c-6 / c-7 / c-8 / c-9letter = c-a / c-b / c-c / c-d / c-e / c-f / c-g / c-h / c-i / c-j/ c-k / c-l / c-m / c-n / c-o / c-p / c-q / c-r / c-s/ c-t / c-u / c-v / c-w / c-x / c-y / c-z; possible sources of mistranscribed numbersc-0 = "O" / "6" / "D" / "G"c-1 = "I" / "L" / "7" / "2" / "Z"c-2 = "Z" / "7" / "P" / "E" / "1"c-3 = "8" / "B"c-4 = "G" / "U"c-5 = "S" / "7"c-6 = "0" / "O" / "8" / "G" / "C" / "B" / "D"c-7 = "J" / "I" / "1" / "L"c-8 = "B" / "3" / "6"c-9 = "G" / "Y" / "O" / "0" / "D"; possible sources of mistranscribed lettersc-a = "G" / "Q" / "O" / "0"c-b = "6" / "3" / "8" / "P" / "0" / "O"c-c = "R" / "6" / "I" / "L" / "O" / "0"c-d = "0" / "O" / "9" / "Q" / "G" / "6" / "A"c-e = "F" / "G" / "0" / "2" / "K" / "Z" / "S" / "O"c-f = "E" / "K" / "T" / "P" / "Y" / "4" / "B" / "7" / "1"c-g = "9" / "Q" / "8" / "6" / "0" / "C" / "4" / "O"c-h = "B" / "N" / "A" / "4" / "6" / "M" / "W" / "F" / "R" / "T" / "X"c-i = "1" / "L" / "7" / "J" / "2" / "T" / "Z"c-j = "I" / "7" / "2" / "9" / "1" / "U" / "T" / "Q" / "P" / "Y" / "Z"/ "L" / "S"c-k = "F" / "X" / "H" / "R"c-l = "1" / "2" / "7" / "C" / "I" / "J" / "R" / "T" / "Y" / "Z"c-m = "H" / "8" / "E" / "3" / "N" / "V" / "W"c-n = "H" / "R" / "C" / "2" / "4" / "M" / "O" / "P" / "K" / "T" / "Z"c-o = "0" / "6" / "9" / "A" / "D" / "G" / "C" / "E" / "B" / "N" / "P"/ "Q" / "R"c-p = "F" / "4" / "8" / "2" / "B" / "J" / "R" / "N" / "O" / "T" / "Y"c-q = "O" / "G" / "9" / "Y" / "1" / "7" / "L"c-r = "K" / "B" / "V" / "C" / "1" / "L" / "2"c-s = "5" / "6" / "9" / "B" / "G" / "Q" / "A" / "Y"c-t = "1" / "4" / "7" / "F" / "I" / "J" / "L" / "P" / "X" / "Y"c-u = "V" / "N" / "A" / "4" / "9" / "W" / "Y"c-v = "U" / "R" / "N"c-w = "M" / "N" / "U" / "V"c-x = "K" / "F" / "4" / "T" / "V" / "Y"c-y = "G" / "V" / "J" / "I" / "4" / "9" / "T" / "F" / "Q" / "1"c-z = "2" / "1" / "L" / "R" / "I" / "7" / "V" / "3" / "4"