fff ffk ffo ffp ffr fft fkf fkk fkp fkt fof fok foo fop for fot fpk fpo fpp fpr fpt frf frk fro frp frr frt ftf ftk fto ftp ftr ftt k-t kff kfo kkk kkp kkr kkt kof kok koo kop kor kot kpf kpk kpo kpp kpr kpt krf krk kro krp krr krt ktf ktk kto ktp ktr ktt of- off ofo ofp ofr oft okk oko okp okr oo- oof ook ooo oop oor oot op- opf opk opo opp opr opt or- orf ork oro orp orr ort ot- otf otk oto otp otr ott p-p pff pfk pfo pfp pfr pft pkf pko pkp pkr pkt pof pok poo pop por pot ppf ppk ppo ppp ppr ppt prf prk pro prp prr prt pt- ptf ptk pto ptp ptr ptt rff rfk rfo rfp rfr rft rkf rkk rko rkp rkt rof rok roo rop ror rot rpf rpk rpo rpp rpr rpt rrf rrk rrp rrr rrt rtf rtk rto rtp rtr rtt tff tfk tfo tfp tfr tft tkk tko tkp tkr tkt to- tof tok too top tor tot tpf tpk tpo tpp tpr tpt trf trk tro trp trr trt ttf ttk tto ttp ttr ttt

f--k ffff ffrr fftf fofo foof fook foot fopp for- fork foro forr fort foto fotp fott fprf frop frot ftop kfff kffk kfok kfoo kfor kfpr kfpt kfro kfrp kfrr kftk kftt kkfr kkft kkkk kkoo kkor kkot kkpk kkpt kkrf kkrk kkro kkrr kkrt kktk koff kofk kofo kofp koft kokf kokk koko kokp kokr kook kooo koop koor koot kopf kopp kopr kopt korf kork koro korr kort kotk koto kotr kott kpfk kpfr kpft kpkk kpkr kpof kpok kpoo kpop kppk kppo kppp kppr kprf kprk kpro kprp kprr kprt kpto kptr kptt krff krfo krfp krft krkk krko krkr krof krok kroo krop kror krpr krpt krrf krrk krro krrr krrt krtk krto krtr ktfo ktkk ktko ktkr ktkt ktok ktoo ktop ktor ktot ktpk ktpo ktpr ktpt ktrf ktrk ktro ktrp ktrr ktrt kttf kttk ktto kttp kttr kttt off- offo offr ofor oftp okko okok okor okot okpo okro okto ooff oooo oort ootp opo- opor oppo opto orff orko oro- orof orok oror orot orro orto otfp oto- otof otok otoo otor otpp otro otto pfff pffr pfft pfkp poff poko poof pook poop poor poot pop- popo popp popt pork poro porr port potf poto pott pppo pppp pprf pptt pro- prof proo prop prot prtp prtr ptop ptrf pttk rkkf roff rofo rokk roko rokr roof rook roop roor root ropo rork roro rort rotk roto rotr rott rpof rrrr rttp tfot tfpt tftp tkof toff tofo toft toko toof took toor toot top- topf topo topp topt torf tork toro torp torr tort toto totr tott tppp tppr tptp tptr trfr troo trop trot trpp trtr ttff ttop tttt

fokto forro forto fprot froop froot ftrtt k-p-r k-pop ko-ko kokko kokor kokot kopff korff korop koror korpo korro kotor kotto kroft kroot kropp krtok offof offto ofoto ofpop okoro ooooo opto- optot optto orfor ortok ortoo ototo otpor otrok pforp po-po pokot poopo poork poort popop poppo poro- porro porto potof potok potoo potop potor potrk potro potto proff proft proof proor proot prop- propp propr propt prot- proto prtor ptprf ptprk ptpro ptprr ptprt ro-ro rofor rokkk rokot rokto rooft rotko roto- rotor rotot rotto rprop rptor rt-rk t-pop t-top toffo tofop tofor tokko toko- tokor topo- topof topor topot toppo topto torok torpo torro torto toto- totok totoo totop tprot troff troft troop trop- tropo trott ttttt

f-prot foofoo forrot ftroop kokopo kokoro kokott kookoo koopoo kootoo korkor kororo kotoko ofpoor oftfor okpoko oofotr ookroo oooooo oporto optfor optoro ortprk ottoor pookoo poopoo popfor popoff popopo poporo poppop poptop portof pottok pottop pppppp profor prokop proto- rokkor rootof rotork to-fro tookto tootoo topoff toppop tororo torpor tortor totopo totoro totrot tropo- troppo trotro

foo-foo footrot forroot kor-kor korkoro kottoor off-off ofproof ottrott poo-poo pop-off pop-top potoroo profoto proport rooftop rootfor rootrot rotkopf too-too tookfor tookoff top-off topfort tototoo tro-tro trotoff

foptroop poorpoor poroporo roof-top rotproof tokotoko toottoot top-root torotoro

poto-poto proprotor rot-proof

footforfoot potoooooooo proof-proof

toptoptoptop