a-a a-t aaa aaf aak aan aao aap aar aat af- afa aff afk afn afo afp afr aft aka akk akn ako akp akr an- ana anf ank ann ano anp anr ant aoa aof aok aon aoo aop aor aot ap- apa apf apk apn apo app apr apt ar- ara arf ark arn aro arp arr art at- ata atf atn ato atp atr att faa faf fak fan fao fap far fat ffa fff ffk ffn ffo ffp ffr fft fka fkf fkk fkp fkt fna fnf fnk fnn fnp fnr fnt foa fof fok fon foo fop for fot fpa fpk fpn fpo fpp fpr fpt fra frf frk frn fro frp frr frt fta ftf ftk ftn fto ftp ftr ftt k-t ka- kaa kaf kak kan kao kap kar kat kfa kff kfo kkk kkn kkp kkr kkt kn- kna knf knk knn kno knp knr knt koa kof kok kon koo kop kor kot kpa kpf kpk kpn kpo kpp kpr kpt kra krf krk krn kro krp krr krt kta ktf ktk ktn kto ktp ktr ktt naa naf nak nan nao nap nar nat nfa nff nfk nfn nfo nfp nfr nft nka nkf nkk nkn nko nkp nkr nkt nna nnf nnk nnn nno nnp nnt no- noa nof nok non noo nop nor not npa npf npn npo npp npr npt nra nrf nrk nrn nro nrp nrr nrt nta ntf ntk ntn nto ntp ntr ntt oaa oaf oak oan oao oap oar oat of- ofa off ofn ofo ofp ofr oft oka okk oko okp okr on- ona onf onk onn ono onp onr ont oo- ooa oof ook oon ooo oop oor oot op- opa opf opk opn opo opp opr opt or- ora orf ork orn oro orp orr ort ot- ota otf otk otn oto otp otr ott p-p paa paf pak pan pao pap par pat pfa pff pfk pfn pfo pfp pfr pft pka pkf pkn pko pkp pkr pkt pn- pna pnf pnk pnn pno pnp pnr pnt poa pof pok pon poo pop por pot ppa ppf ppk ppn ppo ppp ppr ppt pra prf prk prn pro prp prr prt pt- pta ptf ptk ptn pto ptp ptr ptt ra- raa raf rak ran rao rap rar rat rfa rff rfk rfn rfo rfp rfr rft rkf rkk rko rkp rkt rna rnn rno rnp rnr rnt roa rof rok ron roo rop ror rot rpa rpf rpk rpn rpo rpp rpr rpt rra rrf rrk rrn rrp rrr rrt rta rtf rtk rtn rto rtp rtr rtt taa taf tak tan tao tap tar tat tfa tff tfk tfn tfo tfp tfr tft tka tkk tko tkp tkr tkt tna tnf tnk tnn tno tnp tnr tnt to- toa tof tok ton too top tor tot tpa tpf tpk tpn tpo tpp tpr tpt tra trf trk trn tro trp trr trt tta ttf ttk ttn tto ttp ttr ttt