Замена двойного for на while и do while - C (СИ)

for (row = 0; row < 5; row++)
    {
        for (column = 5; column > 0; column--)
        {
            k = (row + column) * 2% 5;
            symbol = 'A' + k;
            printf("%2c", symbol);
        }

 while (row < 5 && column > 0) {
        k = (row + column) * 2 % 5;
        symbol = 'A' + k;
        printf("%2c", symbol);
        column--;
        row++;
    }