I ONLY NEED $6\mathrm{.}1$b and $6\mathrm{.}1$h please, thanks

Exercise $6\mathrm{.}1$ For each of the following wffs$,$ give a countermodel for every system in which it is not valid, and give a semantic validity proof for every system in which it is valid. When you use a single countermodel or validity proof for multiple systems, indicate which systems it is good for.

a$)*[P$diamond$(QR)]$diamond$[Q(P$diamondR$)]$

b$)$ diamond$(P^{{?}^{?}}$diamondQ$)(diamondP$diamond$Q)$

c$)(PvvdiamondQ)(PvvdiamondQ)$

$d$

e$)(P^{{?}^{?}}Q)(diamondP$diamondQ$)$

f$)(PQ)(PQ)$

$g$

h$)$ diamonddiamondP$diamondP$

i$)[(PP)P](diamondPP)$