I play and teach bridge, and the shape of hands is very important. For instance:
KJ854 Q9842 8 A3
is easy to recognize as equal-length majors (top two rows). But then there's the ten.
Various style guides have options for this card; all of which are designed to minimize the "shape" problem. Either use spaces:
K J 10 8 5 Q 9 8 4 2 8 A 10
(but that doesn't work completely - the spades still look longer than the hearts, just not quite as bad as KJ1085 Q9842) or use "T" for ten:
KJT85 Q9842 8 AT
(but the card has "10" on it, not "T", and it's hard to read!)
In unicode there are several characters that are single-character-width 10, but never naked (10-in-circle, 10-as-playing-card, 10-full-stop, ...) Is there a native (i.e. normal font) or simple way in LaTeX to get a single-width "10" element?