Source code in the dyalect programming language

let days = [
    "first", "second", "third", "fourth", "fifth", "sixth", "seventh", "eighth", "ninth",
    "tenth", "eleventh", "twelfth"
]
let gifts = [
    "A partridge in a pear tree",
    "Two turtle doves",
    "Three french hens",
    "Four calling birds",
    "Five golden rings",
    "Six geese a-laying",
    "Seven swans a-swimming",
    "Eight maids a-milking",
    "Nine ladies dancing",
    "Ten lords a-leaping",
    "Eleven pipers piping",
    "Twelve drummers drumming"
]

for i in 0..11 {
    print("On the \(days[i]) day of Christmas, my true love gave to me.")
    for j in i^-1..0 {
        print(gifts[j])
    }
    print()
}