-al -ol a-a a-i aaa aaf aai aak aal aao aap aar aas af- afa aff afi afk afl afo afp afr afs ai- aia aif aii aik ail aio aip air ais aka aki akk akl ako akp akr aks al- ala alf ali alk all alo alp alr als aoa aof aoi aok aol aoo aop aor aos ap- apa apf api apk apl apo app apr aps ar- ara arf ari ark arl aro arp arr ars as- asa asf asi ask asl aso asp asr ass faa faf fai fak fal fao fap far fas ffa fff ffi ffk ffl ffo ffp ffr ffs fia fif fii fik fil fip fir fis fka fkf fki fkk fkl fkp fla flf fli fll flo flp flr fls foa fof foi fok fol foo fop for fos fpa fpi fpk fpl fpo fpp fpr fps fra frf fri frk frl fro frp frr frs fsa fsf fsi fsk fsl fso fsp fsr fss i-f ia- iaa iaf iai ial iao iap iar ias ifa iff ifi ifl ifo ifp ifr ifs iia iif iii iil iio iip iir iis ika ikf iki ikk ikl iko ikr iks il- ila ilf ili ilk ill ilo ilp ilr ils io- ioa iof ioi iol ioo iop ior ios ipa ipf ipi ipl ipo ipp ipr ips ir- ira irf iri irk irl iro irp irr irs is- isa isf isi isk isl iso isp isr iss ka- kaa kaf kai kak kal kao kap kar kas kfa kff kfi kfo kfs kia kif kii kik kil kio kip kir kis kki kkk kkl kkp kkr kks kl- kla klf kli klo klr kls koa kof koi kok kol koo kop kor kos kpa kpf kpi kpk kpl kpo kpp kpr kps kra krf kri krk krl kro krp krr krs ksa ksf ksi ksk ksl kso ksp ksr kss l-p la- laa laf lai lak lal lao lap lar las lfa lff lfi lfk lfl lfo lfp lfr lfs lia lif lii lik lil lio lip lir lis lka lkl lkp lkr lks lla llf lli llk lll llo llp llr lls loa lof loi lok lol loo lop lor los lpa lpf lpi lpk lpl lpo lpp lpr lps lra lrf lri lrk lro lrp lrr lrs lsa lsf lsi lsk lsl lso lsp lsr lss o-i oaa oaf oai oak oal oao oap oar oas of- ofa off ofi ofl ofo ofp ofr ofs oia oif oii oik oil oio oip oir ois oka oki okk okl oko okp okr oks ola olf oli olk oll olo olp ols oo- ooa oof ooi ook ool ooo oop oor oos op- opa opf opi opk opl opo opp opr ops or- ora orf ori ork orl oro orp orr ors os- osa osf osi osk osl oso osp osr oss p-p paa paf pai pak pal pao pap par pas pfa pff pfi pfk pfl pfo pfp pfr pfs pia pif pii pik pil pio pip pir pis pka pkf pki pkl pko pkp pkr pks pla plf pli plk pll plo plp plr pls poa pof poi pok pol poo pop por pos ppa ppf ppi ppk ppl ppo ppp ppr pps pra prf pri prk prl pro prp prr prs ps- psa psf psi psk psl pso psp psr pss ra- raa raf rai rak ral rao rap rar ras rfa rff rfi rfk rfl rfo rfp rfr rfs ria rif rii rik ril rio rip rir ris rkf rkk rko rkp rks rla rlf rli rll rlo rlp rlr rls roa rof roi rok rol roo rop ror ros rpa rpf rpi rpk rpl rpo rpp rpr rps rra rrf rri rrk rrl rrp rrr rrs rsa rsf rsi rsk rsl rso rsp rsr rss saa saf sai sak sal sao sap sar sas sfa sff sfi sfk sfl sfo sfp sfr sfs sia sif sii sik sil sio sip sir sis sk- ska skf ski skk skl sko skp skr sks sla slf sli slk sll slo slp slr sls soa sof soi sok sol soo sop sor sos spa spf spi spk spl spo spp spr sps sr- sra srf sri srk srl sro srp srr srs ss- ssa ssf ssi ssk ssl sso ssp ssr sss