a-a a-i aaa aad aaf aai aak aao aar aas ad- ada add adf adi adk ado adr ads af- afa afd aff afi afk afo afr afs ai- aia aid aif aii aik aio air ais aka akd aki akk ako akr aks aoa aod aof aoi aok aoo aor aos ar- ara ard arf ari ark aro arr ars as- asa asd asf asi ask aso asr ass daa dad daf dai dak dao dar das dda ddd ddf ddi ddk ddo ddr dds dfa dfd dff dfi dfk dfo dfr dfs di- dia did dif dii dik dio dir dis dka dki dkk dko dkr dks doa dod dof doi dok doo dor dos dra drd dri drk dro drr drs dsa dsd dsf dsi dsk dso dsr dss faa fad faf fai fak fao far fas fda fdd fdf fdi fdk fdo fdr fds ffa ffd fff ffi ffk ffo ffr ffs fia fid fif fii fik fir fis fka fkf fki fkk foa fof foi fok foo for fos fra frd frf fri frk fro frr frs fsa fsd fsf fsi fsk fso fsr fss i-d i-f ia- iaa iad iaf iai iao iar ias ida idd idf idi idk ido idr ids ifa ifd iff ifi ifo ifr ifs iia iid iif iii iio iir iis ika ikf iki ikk iko ikr iks io- ioa iod iof ioi ioo ior ios ir- ira ird irf iri irk iro irr irs is- isa isd isf isi isk iso isr iss ka- kaa kad kaf kai kak kao kar kas kda kdf kdk kdo kdr kds kfa kfd kff kfi kfo kfs kia kid kif kii kik kio kir kis kki kkk kkr kks koa kod kof koi kok koo kor kos kra krd krf kri krk kro krr krs ksa ksd ksf ksi ksk kso ksr kss o-i oaa oad oaf oai oak oao oar oas oda odd odf odi odo odr ods of- ofa ofd off ofi ofo ofr ofs oia oid oif oii oik oio oir ois oka okd oki okk oko okr oks oo- ooa ood oof ooi ook ooo oor oos or- ora ord orf ori ork oro orr ors os- osa osd osf osi osk oso osr oss ra- raa rad raf rai rak rao rar ras rda rdd rdf rdi rdo rdr rds rfa rfd rff rfi rfk rfo rfr rfs ria rid rif rii rik rio rir ris rkf rkk rko rks roa rod rof roi rok roo ror ros rra rrd rrf rri rrk rrr rrs rsa rsd rsf rsi rsk rso rsr rss saa sad saf sai sak sao sar sas sda sdd sdf sdi sdk sdo sdr sds sfa sfd sff sfi sfk sfo sfr sfs sia sid sif sii sik sio sir sis sk- ska skd skf ski skk sko skr sks soa sod sof soi sok soo sor sos sr- sra srd srf sri srk sro srr srs ss- ssa ssd ssf ssi ssk sso ssr sss