-er a-a a-i a-z aaa aad aae aaf aai aak aao aar aaz ad- ada add ade adf adi adk ado adr adz aea aed aee aef aei aek aeo aer aez af- afa afd afe aff afi afk afo afr afz ai- aia aid aie aif aii aik aio air aiz aka akd ake aki akk ako akr aoa aod aoe aof aoi aok aoo aor ar- ara ard are arf ari ark aro arr arz az- aza azd aze azf azi azo azz daa dad dae daf dai dak dao dar daz dda ddd dde ddf ddi ddk ddo ddr ddz de- dea ded dee def dei dek deo der dez dfa dfd dfe dff dfi dfk dfo dfr dfz di- dia did die dif dii dik dio dir diz dka dke dki dkk dko dkr doa dod doe dof doi dok doo dor doz dra drd dre dri drk dro drr drz dza dzd dze dzi dzo dzr eaa ead eae eaf eai eak eao ear eaz ed- eda edd ede edf edi edk edo edr eea eed eee eef eek eeo eer ef- efa efd efe eff efi efo efr eia eid eie eif eii eik eio eir eka ekd eke ekf eki eko ekr eo- eoa eod eoe eof eoi eok eoo eor era erd ere erf eri erk ero err erz eze ezf ezo ezr ezz faa fad fae faf fai fak fao far faz fda fdd fde fdf fdi fdk fdo fdr fea fed fee fef fei fek feo fer fez ffa ffd ffe fff ffi ffk ffo ffr ffz fia fid fie fif fii fik fir fiz fka fkf fki fkk foa foe fof foi fok foo for foz fra frd fre frf fri frk fro frr fzd i-d i-f ia- iaa iad iae iaf iai iao iar iaz ida idd ide idf idi idk ido idr ie- iea ied iee ief iei iek ier ifa ifd ife iff ifi ifo ifr ifz iia iid iie iif iii iio iir ika ike ikf iki ikk iko ikr io- ioa iod ioe iof ioi ioo ior ir- ira ird ire irf iri irk iro irr iza ize izi izo izz k-z ka- kaa kad kae kaf kai kak kao kar kaz kda kde kdf kdk kdo kdr ke- kea ked kee kef kei kek keo ker kez kfa kfd kff kfi kfo kia kid kie kif kii kik kio kir kiz kke kki kkk kkr koa kod koe kof koi kok koo kor koz kra krd krf kri krk kro krr kzo o-i oaa oad oae oaf oai oak oao oar oda odd ode odf odi odo odr oea oed oee oef oei oeo oer of- ofa ofd ofe off ofi ofo ofr ofz oia oid oie oif oii oik oio oir oiz oka okd oke oki okk oko okr oo- ooa ood oof ooi ook ooo oor or- ora ord ore orf ori ork oro orr orz oza oze ozo ozz ra- raa rad rae raf rai rak rao rar raz rda rdd rde rdf rdi rdo rdr re- rea red ree ref rei rek reo rer rez rfa rfd rfe rff rfi rfk rfo rfr rfz ria rid rie rif rii rik rio rir riz rke rkf rkk rko rkz roa rod roe rof roi rok roo ror roz rra rrd rrf rri rrk rrr rza rze rzo zaa zad zaf zai zak zao zar zaz zdf zea zed zee zef zek zeo zer zez zfa zfd zfr zia zid zie zif zik zio zir ziz zka zo- zoa zod zoe zof zoi zok zoo zor zro zzr zzz