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contracts...callingParentFunction.sol

//SPDX-License-Identifier: MIT
pragma solidity ^0.8;

contract A{
    event log(string text,uint age);
    
    function fun1() public virtual{
        emit log("A.fun1",21);
    }
    function fun2() public virtual{
        emit log("A.fun2",22);
    }

}

contract B is A{

    function fun1() public virtual override{
        emit log("B.fun1",31);
        A.fun1();  //direct calling
    }
    function fun2() public virtual override{
        emit log("B.fun2",32);
        super.fun2(); //super called function from right most to depth
    }
}

contract C is A{
    function fun1() public virtual override{
        emit log("C.fun1",41);
        A.fun1();  //direct calling
    }
    function fun2() public virtual override{
        emit log("C.fun2",42);
        super.fun2(); //super called function from right most to depth
    }
}
contract D is B,C{

    function fun1() public override(B,C){
        emit log("D.fun1",51);
        B.fun1();  //direct calling
    }
    function fun2() public override(B,C){
        emit log("D.fun2",52);
        super.fun2(); //super called function from right most to depth
    }

}