I'd like to draw on the collective multilingual knowledge of the Typophile community to assemble the different forms of ordinal numbers in various languages.
A brief refresher for those who need it: Ordinal means the form of a number when it indicates "order" -- for example, in English the ordinal form of "one" is "first."
I'm also interested in the abbreviated forms.
To start us off . . .
one = first = 1st
two = second = 2nd (2d is also acceptable in some style guides)
three = third = 3rd (3d is also acceptable in some style guides)
four = fourth = 4th
five = fifth = 5th
six = sixth = 6th
seven = seventh = 7th
eight = eighth = 8th
nine = ninth = 9th
ten = tenth = 10th
eleven = eleventh = 11th
twelve = twelfth = 12th
thirteen = thirteenth = 13th
fourteen = fourteenth = 14th
and so forth: 15th, 16th, 17th, 18th, 19th
twenty = twentieth = 20th
twenty-one = twenty-first = 21st
twenty-two = twenty-second = 22nd
twenty-three = twenty-third = 23rd
twenty-four = twenty-fourth = 24th
and so forth: 25th, 26th, 27th, 28th, 29th
one hundred = one hundredth = 100th
and so forth: 101st, 102nd, 103rd, 104th . . .
I think that covers all the patterns in English.
I realize some other languages have genders, which may further complicate matters.