export interface Hexagram {
    upper: number;
    lower: number;
    name: string;
    fullName: string;
    symbol: string;
    judgment: string;
    image: string;
    nature: string;
    keywords: string[];
}
export declare function getHexagram(upperNum: number, lowerNum: number): Hexagram;
export declare function getChangedHexagram(upperNum: number, lowerNum: number, changingLine: number): Hexagram;
export declare function getMutualHexagram(upperNum: number, lowerNum: number): Hexagram;