Everything fits:
................M
............MMMCD
....MMMX....M...C
......X.M.MMMV..C
....M.CML.M.C....
...MMDV.X.M.MMCM.
..M.D..MXCI....M.
.MMML..C....M..M.
..I....M....MMMD.
MCXC..MLIV..M..C.
.X....C.....D....
XLIX..M.MMMDIII..
......V.....V....
