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Number > Roman numeral Favorite

The thousands, hundreds, tens, and units are each captured in their own group.

Sample Matches

Text	Result
`III` Group #0 `III` Group #1 Group #2 Group #3 Group #4 `III`	match
`MCIV` Group #0 `MCIV` Group #1 `M` Group #2 `C` Group #3 Group #4 `IV`	match
`MMCDXLVI` Group #0 `MMCDXLVI` Group #1 `MM` Group #2 `CD` Group #3 `XL` Group #4 `VI`	match
`IIII`	no match
`IM`	no match