public class MakeTwoConsecutive {

	boolean ok(String S) {
		for(int i = 0; i < S.length() - 1; ++i)
			if(S.charAt(i) == S.charAt(i+1))
				return true;
		return false;
	}

	public String solve(String S) {
		for(int i = 0; i < S.length(); ++i)
			if(ok(S.substring(0, i) + S.substring(i+1)))
				return "Possible";
		return "Impossible";
	}
}