$(1$ of $10)$

Figure $10\mathrm{.}26$ Example flip flop By author

Figure $10\mathrm{.}27$ Example #$2$ of a FF $)$ By author

Figure $10\mathrm{.}28$ Example #$3$ By author

Look at Figure $10\mathrm{.}26$ and select A or B for the type of clock :

rising edge

falling edge