Figure* createChain() { //6
    Figure *figureA = [[Figure alloc] init];
    
    Figure *figureB = [[Figure alloc] init];
    figureA->next = figureB;
    figureA->_height = 3;
    figureA->_width = 4;
    
    Figure *figureC = [[Figure alloc] init];
    figureB->next = figureC;
    figureB->_height = 5;
    figureB->_width = 6;
    
    Figure *figureD = [[Figure alloc] init];
    figureC->next = figureD;
    figureC->_height = 7;
    figureC->_width = 8;
    
    Figure *figureE = [[Figure alloc] init];
    figureD->next = figureE;
    figureD->_height = 9;
    figureD->_width = 10;
    
    return figureA;
}