ABC 115 IV 237
(ABC)\s(\d{1,4})\s([MDCLXVI])\s(\d{1,4})
(ABC)\s(\d{1,4})\s([MDCLXVI]+)\s(\d{1,4})
M{0,3}(CM|CD|D?C{0,3})(XC|XL|L?X{0,3})(IX|IV|V?I{0,3})
IX|IV|V?I{0,3}
IX|IV|V?I{1,3}|V