fff ffo ffp ffr ffx fof foo fop for fox fpo fpp fpr fpx frf fro frp frr fxp fxr fxx of- off ofo ofp ofr ofx oo- oof ooo oop oor oox op- opf opo opp opr opx or- orf oro orp orr orx ox- oxf oxo oxx p-p pff pfo pfp pfr pfx pof poo pop por pox ppf ppo ppp ppr ppx prf pro prp prr prx pxr rff rfo rfp rfr rof roo rop ror rox rpf rpo rpp rpr rpx rrf rrp rrr rxp rxr xfx xof xoo xop xor xox xpf xpo xpp xrf xrx xxo xxp xxx

ffff ffrr fofo foof fopp for- foro forr foxx fprf frop off- offo offr ofor ooff oooo opo- opor oppo orff oro- orof oror orro oxo- oxof oxox oxxo pfff pffr poff poof poop poor pop- popo popp poro porr pppo pppp pprf pro- prof proo prop prox roff rofo roof roop roor roox ropo roro roxo rpof rrrr xoro xorp xoxo xxxo xxxx

forro foxxx froop fxpro offof ofpop ooooo orfor p-o-x pforp po-po poopo popop poppo poro- porro pppox proff proof proor prop- propp propr ro-ro rofor rprop xorro xoxox

foofoo ofpoor oooooo poopoo popfor popoff popopo poporo poppop pppppp profor xoxoxo

foo-foo off-off ofproof poo-poo pop-off xxxxxxx

poorpoor poroporo xoxoxoxo

proof-proof

xxxxxxxxxxxx