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Reg
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Enterprise
Regular Expression
/
([[:<:]]M*(C[MD]|D?C{0,3})(X[CL]|L?X{0,3})(I[VX]|V?I{0,3})[[:>:]])
/
gm
Input 1
1
New
### match ### I II III IV V VI VII VIII IX X XIII XIV XV XVIII XIX XXV XXVI XXVII XXVII XXIX XXX XXXIII XXXVIII XXXIX XL XLII XLV XLVIII XLIX L LI LII LIII LIV LV LVI LVII LVIII LIX LX LXVI LXIX LXXIX LXXXV LXXXVIII XC XCV XCVI XCVII XCIX C CI CV CIX CXI CXX CXXX CXXXVIII CXXXIX CXLII CL CLV CLVIII CLX CLXX CLXXX CXC CXCIII CXCVII CXCIX CC CCIII CCVIII CCIX CCXXV CCL CCLXXV CCCLXXV CD CDXXV CDL CDLXXV CDXC D DIX DCLXVI DCLXXV DCCCXXVIII CM CMLXXV M ML MCV MCCCL MD MDCCXXV MDCCCLXXV MCML MCMXCVIII MCMXCIX MM MMCCCXXV MMCDLXXV MMDL MMM MMMCCXXVIII MMMCCCXXVIII MMMD MMMCMXCV MMMCMXCVIII MMMCMXCIX MMMM MMMMMMMMMCMXCIX MMMMMMMMMMMDCCXXXII #### do not match #### VV VVX XVV IIII IIIII IVIVIV XIIX XXXXII VC IIXV IC CXIIL LVIXXX LIXXX XXXVIIII XXXVV MCVV MLTK IIV IIX IIL IIM IIC CCM CMD CMDB L0L LOL GG RAF WTF XIIIXCVIIVMC MMIXIII CCCXXXIIX MCMM MDCCLXXVIIII CCCD CCCXXXIIII MMMMXXXX
Substitution
### match ### I II III IV V VI VII VIII IX X XIII XIV XV XVIII XIX XXV XXVI XXVII XXVII XXIX XXX XXXIII XXXVIII XXXIX XL XLII XLV XLVIII XLIX L LI LII LIII LIV LV LVI LVII LVIII LIX LX LXVI LXIX LXXIX LXXXV LXXXVIII XC XCV XCVI XCVII XCIX C CI CV CIX CXI CXX CXXX CXXXVIII CXXXIX CXLII CL CLV CLVIII CLX CLXX CLXXX CXC CXCIII CXCVII CXCIX CC CCIII CCVIII CCIX CCXXV CCL CCLXXV CCCLXXV CD CDXXV CDL CDLXXV CDXC D DIX DCLXVI DCLXXV DCCCXXVIII CM CMLXXV M ML MCV MCCCL MD MDCCXXV MDCCCLXXV MCML MCMXCVIII MCMXCIX MM MMCCCXXV MMCDLXXV MMDL MMM MMMCCXXVIII MMMCCCXXVIII MMMD MMMCMXCV MMMCMXCVIII MMMCMXCIX MMMM MMMMMMMMMCMXCIX MMMMMMMMMMMDCCXXXII #### do not match #### VV VVX XVV IIII IIIII IVIVIV XIIX XXXXII VC IIXV IC CXIIL LVIXXX LIXXX XXXVIIII XXXVV MCVV MLTK IIV IIX IIL IIM IIC CCM CMD CMDB L0L LOL GG RAF WTF XIIIXCVIIVMC MMIXIII CCCXXXIIX MCMM MDCCLXXVIIII CCCD CCCXXXIIII MMMMXXXX