-er a-a a-t aaa aad aae aak aao aap aar aat ad- ada add ade adk ado adp adr adt aea aed aee aek aeo aep aer aet aka akd ake akk ako akp akr aoa aod aoe aok aoo aop aor aot ap- apa apd ape apk apo app apr apt ar- ara ard are ark aro arp arr art at- ata atd ate ato atp atr att daa dad dae dak dao dap dar dat dda ddd dde ddk ddo ddp ddr ddt de- dea ded dee dek deo dep der det dka dke dkk dko dkp dkr dkt doa dod doe dok doo dop dor dot dpa dpd dpe dpk dpo dpp dpr dpt dra drd dre drk dro drp drr drt dta dtd dte dtk dto dtp dtr dtt eaa ead eae eak eao eap ear eat ed- eda edd ede edk edo edp edr edt eea eed eee eek eeo eep eer eet eka ekd eke eko ekp ekr ekt eo- eoa eod eoe eok eoo eop eor eot ep- epa epd epe epo epp epr ept era erd ere erk ero erp err ert eta etd ete etk eto etp etr ett k-t ka- kaa kad kae kak kao kap kar kat kda kde kdk kdo kdp kdr kdt ke- kea ked kee kek keo kep ker ket kke kkk kkp kkr kkt koa kod koe kok koo kop kor kot kpa kpd kpe kpk kpo kpp kpr kpt kra krd krk kro krp krr krt kta kte ktk kto ktp ktr ktt oaa oad oae oak oao oap oar oat oda odd ode odo odp odr odt oea oed oee oeo oep oer oet oka okd oke okk oko okp okr oo- ooa ood ook ooo oop oor oot op- opa opd ope opk opo opp opr opt or- ora ord ore ork oro orp orr ort ot- ota otd ote otk oto otp otr ott p-p paa pad pae pak pao pap par pat pda pdd pde pdk pdo pdp pdr pdt pea ped pee pek peo pep per pet pka pkd pke pko pkp pkr pkt poa pod poe pok poo pop por pot ppa ppd ppe ppk ppo ppp ppr ppt pra prd pre prk pro prp prr prt pt- pta ptd pte ptk pto ptp ptr ptt ra- raa rad rae rak rao rap rar rat rda rdd rde rdo rdp rdr rdt re- rea red ree rek reo rep rer ret rke rkk rko rkp rkt roa rod roe rok roo rop ror rot rpa rpd rpe rpk rpo rpp rpr rpt rra rrd rrk rrp rrr rrt rta rtd rte rtk rto rtp rtr rtt taa tad tae tak tao tap tar tat tda tdd tde tdk tdo tdp tdr tdt te- tea ted tee tek teo tep ter tet tka tke tkk tko tkp tkr tkt to- toa tod toe tok too top tor tot tpa tpd tpe tpk tpo tpp tpr tpt tra trd tre trk tro trp trr trt tta ttd tte ttk tto ttp ttr ttt