//Sample08_034.java
class Sample08_034{

		static final char CH_START = 'a';
    static final char CH_END = 'z';
    static String[] method_for(char ch){
			String[] result = new String[2];

				if(CH_START > ch || ch > CH_END){
					return null;
				}

        String str ="";
				for(int i = CH_START; i<=ch; i++){
				    str += (char)i;
				}
				result[0] = str;

				str ="";
				for(int i = ch; i<=CH_END; i++){
				    str += (char)i;
				}
				result[1] = str;
        return result;
    }
    public static void main(String[] args){
        String[] strs = method_for('v');
        System.out.println(strs[0]);
				System.out.println(strs[1]);
    }
}