'Cross-country skiing is sometimes referred to by these 2 letters, the same ones used to denote 90 in Roman numerals'
XC
Xs & Os: Cross-country skiing is sometimes referred to by these 2 letters, the same ones used to denote 90 in Roman numerals
Cross-country skiing is sometimes referred to by these 2 letters, the same ones used to denote 90 in Roman numerals
Cross-country skiing is sometimes referred to by these 2 letters, the same ones used to denote 90 in Roman numerals
"X"s & "O"s
XC
"X"s & "O"s