-er a-a a-i a-t aaa aad aae aaf aai aak aao aar aat ad- ada add ade adf adi adk ado adr adt aea aed aee aef aei aek aeo aer aet af- afa afd afe aff afi afk afo afr aft ai- aia aid aie aif aii aik aio air ait aka akd ake aki akk ako akr aoa aod aoe aof aoi aok aoo aor aot ar- ara ard are arf ari ark aro arr art at- ata atd ate atf ati ato atr att daa dad dae daf dai dak dao dar dat dda ddd dde ddf ddi ddk ddo ddr ddt de- dea ded dee def dei dek deo der det dfa dfd dfe dff dfi dfk dfo dfr dft di- dia did die dif dii dik dio dir dit dka dke dki dkk dko dkr dkt doa dod doe dof doi dok doo dor dot dra drd dre dri drk dro drr drt dta dtd dte dtf dti dtk dto dtr dtt eaa ead eae eaf eai eak eao ear eat ed- eda edd ede edf edi edk edo edr edt eea eed eee eef eek eeo eer eet ef- efa efd efe eff efi efo efr eft eia eid eie eif eii eik eio eir eit eka ekd eke ekf eki eko ekr ekt eo- eoa eod eoe eof eoi eok eoo eor eot era erd ere erf eri erk ero err ert eta etd ete etf eti etk eto etr ett faa fad fae faf fai fak fao far fat fda fdd fde fdf fdi fdk fdo fdr fdt fea fed fee fef fei fek feo fer fet ffa ffd ffe fff ffi ffk ffo ffr fft fia fid fie fif fii fik fir fit fka fkf fki fkk fkt foa foe fof foi fok foo for fot fra frd fre frf fri frk fro frr frt fta ftd fte ftf fti ftk fto ftr ftt i-d i-f ia- iaa iad iae iaf iai iao iar iat ida idd ide idf idi idk ido idr idt ie- iea ied iee ief iei iek ier iet ifa ifd ife iff ifi ifo ifr ift iia iid iie iif iii iio iir iit ika ike ikf iki ikk iko ikr ikt io- ioa iod ioe iof ioi ioo ior iot ir- ira ird ire irf iri irk iro irr irt ita itd ite itf iti itk ito itt k-t ka- kaa kad kae kaf kai kak kao kar kat kda kde kdf kdk kdo kdr kdt ke- kea ked kee kef kei kek keo ker ket kfa kfd kff kfi kfo kia kid kie kif kii kik kio kir kit kke kki kkk kkr kkt koa kod koe kof koi kok koo kor kot kra krd krf kri krk kro krr krt kta kte ktf ktk kto ktr ktt o-i oaa oad oae oaf oai oak oao oar oat oda odd ode odf odi odo odr odt oea oed oee oef oei oeo oer oet of- ofa ofd ofe off ofi ofo ofr oft oia oid oie oif oii oik oio oir oit oka okd oke oki okk oko okr oo- ooa ood oof ooi ook ooo oor oot or- ora ord ore orf ori ork oro orr ort ot- ota otd ote otf oti otk oto otr ott ra- raa rad rae raf rai rak rao rar rat rda rdd rde rdf rdi rdo rdr rdt re- rea red ree ref rei rek reo rer ret rfa rfd rfe rff rfi rfk rfo rfr rft ria rid rie rif rii rik rio rir rit rke rkf rkk rko rkt roa rod roe rof roi rok roo ror rot rra rrd rrf rri rrk rrr rrt rta rtd rte rtf rti rtk rto rtr rtt taa tad tae taf tai tak tao tar tat tda tdd tde tdf tdi tdk tdo tdr tdt te- tea ted tee tef tei tek teo ter tet tfa tfd tfe tff tfi tfk tfo tfr tft tia tid tie tif tii tik tio tir tit tka tke tkk tko tkr tkt to- toa tod toe tof toi tok too tor tot tra trd tre trf tri trk tro trr trt tta ttd tte ttf tti ttk tto ttr ttt