-er a-a a-t aaa aad aae aak aao aar aat ad- ada add ade adk ado adr adt aea aed aee aek aeo aer aet aka akd ake akk ako akr aoa aod aoe aok aoo aor aot ar- ara ard are ark aro arr art at- ata atd ate ato atr att daa dad dae dak dao dar dat dda ddd dde ddk ddo ddr ddt de- dea ded dee dek deo der det dka dke dkk dko dkr dkt doa dod doe dok doo dor dot dra drd dre drk dro drr drt dta dtd dte dtk dto dtr dtt eaa ead eae eak eao ear eat ed- eda edd ede edk edo edr edt eea eed eee eek eeo eer eet eka ekd eke eko ekr ekt eo- eoa eod eoe eok eoo eor eot era erd ere erk ero err ert eta etd ete etk eto etr ett k-t ka- kaa kad kae kak kao kar kat kda kde kdk kdo kdr kdt ke- kea ked kee kek keo ker ket kke kkk kkr kkt koa kod koe kok koo kor kot kra krd krk kro krr krt kta kte ktk kto ktr ktt oaa oad oae oak oao oar oat oda odd ode odo odr odt oea oed oee oeo oer oet oka okd oke okk oko okr oo- ooa ood ook ooo oor oot or- ora ord ore ork oro orr ort ot- ota otd ote otk oto otr ott ra- raa rad rae rak rao rar rat rda rdd rde rdo rdr rdt re- rea red ree rek reo rer ret rke rkk rko rkt roa rod roe rok roo ror rot rra rrd rrk rrr rrt rta rtd rte rtk rto rtr rtt taa tad tae tak tao tar tat tda tdd tde tdk tdo tdr tdt te- tea ted tee tek teo ter tet tka tke tkk tko tkr tkt to- toa tod toe tok too tor tot tra trd tre trk tro trr trt tta ttd tte ttk tto ttr ttt