                   </math>,
                        <math overflow="scroll">

                            <msub><mi mathvariant="italic">b</mi>
                            <mn>3</mn>
                            </msub>
                        </math>,
                        it is taken from memory as
                        <math overflow="scroll">

                            <msub><mi mathvariant="italic">b</mi>
                            <mn>3</mn>
                            </msub>
                  