export declare const VALENCE_MAP: {
    0: string;
    1: string;
    2: string;
    3: string;
    4: string;
    5: string;
    6: string;
    7: string;
    8: string;
    9: string;
    10: string;
    11: string;
    12: string;
    13: string;
    14: string;
};