-er a-a a-b a-c a-t aaa aab aac aad aae aag aak aao aap aar aat ab- aba abb abc abd abe abg abk abo abp abr abt ac- aca acb acc acd ace acg ack aco acp acr act ad- ada adb adc add ade adg adk ado adp adr adt aea aeb aec aed aee aeg aek aeo aep aer aet ag- aga agb agc agd age agg agk ago agp agr agt aka akb akc akd ake akg akk ako akp akr aoa aob aoc aod aoe aog aok aoo aop aor aot ap- apa apb apc apd ape apg apk apo app apr apt ar- ara arb arc ard are arg ark aro arp arr art at- ata atb atc atd ate atg ato atp atr att b-p baa bab bac bad bae bag bak bao bap bar bat bba bbb bbc bbd bbe bbg bbk bbo bbp bbr bbt bca bcb bcc bcd bce bcg bck bco bcp bcr bct bda bdb bdc bdd bde bdg bdk bdo bdp bdr bdt be- bea beb bec bed bee beg bek beo bep ber bet bga bgb bgc bgd bge bgg bgk bgo bgp bgr bgt bka bkb bkc bke bkg bkk bko bkp bkr bkt boa bob boc bod boe bog bok boo bop bor bot bpa bpb bpc bpd bpe bpg bpo bpp bpr bpt bra brb brd bre brg brk bro brp brr brt bta btb btc btd bte btg btk bto btp btr btt c-- caa cab cac cad cae cag cak cao cap car cat cba cbb cbc cbd cbe cbg cbk cbo cbp cbr cbt cca ccb ccc ccd cce ccg cck cco ccp ccr cct cda cdb cdc cdd cde cdg cdk cdo cdp cdr cdt ce- cea ceb cec ced cee ceg cek ceo cep cer cet cga cgb cgc cgd cge cgg cgo cgp cgr cgt cka ckb ckc ckd cko ckt co- coa cob coc cod coe cog cok coo cop cor cot cpa cpb cpc cpd cpe cpg cpk cpo cpp cpr cpt cra crb crc crd cre crg crk cro crp crr crt cta ctb ctc ctd cte ctg ctk cto ctp ctr ctt daa dab dac dad dae dag dak dao dap dar dat dba dbb dbc dbd dbe dbg dbk dbo dbp dbr dbt dca dcb dcc dcd dce dcg dck dco dcp dcr dct dda ddb ddc ddd dde ddg ddk ddo ddp ddr ddt de- dea deb dec ded dee deg dek deo dep der det dga dgc dgd dge dgg dgk dgp dgr dgt dka dkb dkc dke dkg dkk dko dkp dkr dkt doa dob doc dod doe dog dok doo dop dor dot dpa dpb dpc dpd dpe dpg dpk dpo dpp dpr dpt dra drb drc drd dre drg drk dro drp drr drt dta dtb dtc dtd dte dtg dtk dto dtp dtr dtt eaa eab eac ead eae eag eak eao eap ear eat eba ebb ebc ebd ebe ebg ebk ebo ebp ebr ebt ec- eca ecb ecc ecd ece ecg eck eco ecr ect ed- eda edb edc edd ede edg edk edo edp edr edt eea eeb eec eed eee eeg eek eeo eep eer eet ega egb egc egd ege egg ego egp egr egt eka ekb ekc ekd eke ekg eko ekp ekr ekt eo- eoa eob eoc eod eoe eog eok eoo eop eor eot ep- epa epb epc epd epe epg epo epp epr ept era erb erc erd ere erg erk ero erp err ert eta etb etc etd ete etg etk eto etp etr ett g-d g-p gaa gab gac gad gae gag gak gao gap gar gat gba gbc gbd gbe gbg gbk gbo gbp gbr gbt gca gcb gcc gcd gce gcg gck gco gcp gcr gct gda gdb gdc gdd gde gdk gdo gdp gdr gdt ge- gea geb gec ged gee geg gek geo gep ger get gga ggb ggc ggd ggg ggo ggp ggr ggt gka gkb gkd gko gkp gkt goa gob goc god goe gog gok goo gop gor got gpa gpb gpc gpd gpe gpg gpk gpo gpp gpr gpt gra grb grc grd gre grg grk gro grp grr grt gta gtb gtc gtd gte gtg gtk gto gtp gtr gtt k-t ka- kaa kab kac kad kae kag kak kao kap kar kat kba kbb kbc kbd kbe kbk kbo kbp kbr kca kcb kcc kcd kce kcg kck kcp kcr kct kda kdb kdc kde kdg kdk kdo kdp kdr kdt ke- kea keb kec ked kee keg kek keo kep ker ket kga kgb kgc kgd kgo kgp kkb kkc kke kkk kkp kkr kkt koa kob koc kod koe kog kok koo kop kor kot kpa kpc kpd kpe kpk kpo kpp kpr kpt kra krc krd krg krk kro krp krr krt kta ktb ktc kte ktg ktk kto ktp ktr ktt oaa oab oac oad oae oag oak oao oap oar oat ob- oba obb obc obd obe obg obk obo obp obr obt oc- oca ocb occ ocd ocg ock oco ocp ocr oct oda odb odc odd ode odg odo odp odr odt oea oeb oec oed oee oeg oeo oep oer oet oga ogc ogd oge ogg ogo ogp ogt oka okb okc okd oke okg okk oko okp okr oo- ooa oob ooc ood oog ook ooo oop oor oot op- opa opb opc opd ope opg opk opo opp opr opt or- ora orb orc ord ore org ork oro orp orr ort ot- ota otb otc otd ote otg otk oto otp otr ott p-p paa pab pac pad pae pag pak pao pap par pat pba pbb pbc pbd pbe pbg pbk pbo pbp pbr pbt pca pcb pcc pcd pce pcg pck pco pcp pcr pct pda pdb pdc pdd pde pdg pdk pdo pdp pdr pdt pea peb pec ped pee peg