proc main() {
    print(nl())
    print("forsour\n")
    forsour(s,c) {
        print(d(c),": ",key(s),nl())
    }
    print("foreven\n")
    foreven(e,c) {
        print(d(c),": ",key(e),nl())
    }
    print("forothr\n")
    forothr(s,c) {
        print(d(c),": ",key(s),nl())
    }
}
