-er a-a a-b a-t aaa aab aae aaj aak aao aap aar aat ab- aba abb abe abj abk abo abp abr abt aea aeb aee aej aek aeo aep aer aet aja ajb aje ajj ajk ajo ajp ajr ajt aka akb ake akj akk ako akp akr aoa aob aoe aoj aok aoo aop aor aot ap- apa apb ape apj apk apo app apr apt ar- ara arb are arj ark aro arp arr art at- ata atb ate ato atp atr att b-p baa bab bae baj bak bao bap bar bat bba bbb bbe bbk bbo bbp bbr bbt be- bea beb bee bek beo bep ber bet bja bjj bjk bjp bjr bjt bka bkb bke bkk bko bkp bkr bkt boa bob boe boj bok boo bop bor bot bpa bpb bpe bpo bpp bpr bpt bra brb bre brj brk bro brp brr brt bta btb bte btk bto btp btr btt eaa eab eae eaj eak eao eap ear eat eba ebb ebe ebj ebk ebo ebp ebr ebt eea eeb eee eek eeo eep eer eet eja ejo ejp ejt eka ekb eke eko ekp ekr ekt eo- eoa eob eoe eok eoo eop eor eot ep- epa epb epe epo epp epr ept era erb ere erk ero erp err ert eta etb ete etj etk eto etp etr ett jaa jab jae jaj jak jao jap jar jat jba jbj jbk jbo jbr jbt jea jeb jee jej jek jeo jep jer jet jja jjb jjj jjk jjp jjr jka jkb jkk jko jkp jkr jkt joa job joe joj jok joo jop jor jot jpa jpb jpe jpj jpo jpp jpr jpt jra jrb jrk jro jrp jrr jrt jta jtb jte jtk jtp jtr jtt k-t ka- kaa kab kae kaj kak kao kap kar kat kba kbb kbe kbk kbo kbp kbr ke- kea keb kee kek keo kep ker ket kjb kje kjr kkb kke kkk kkp kkr kkt koa kob koe kok koo kop kor kot kpa kpe kpk kpo kpp kpr kpt kra krk kro krp krr krt kta ktb kte ktj ktk kto ktp ktr ktt oaa oab oae oaj oak oao oap oar oat ob- oba obb obe obj obk obo obp obr obt oea oeb oee oeo oep oer oet oja ojb oje ojo oka okb oke okj okk oko okp okr oo- ooa oob ook ooo oop oor oot op- opa opb ope opj opk opo opp opr opt or- ora orb ore ork oro orp orr ort ot- ota otb ote otk oto otp otr ott p-p paa pab pae paj pak pao pap par pat pba pbb pbe pbj pbk pbo pbp pbr pbt pea peb pee pek peo pep per pet pja pjo pjp pka pkb pke pko pkp pkr pkt poa pob poe pok poo pop por pot ppa ppb ppe ppj ppk ppo ppp ppr ppt pra prb pre prk pro prp prr prt pt- pta ptb pte ptj ptk pto ptp ptr ptt ra- raa rab rae raj rak rao rap rar rat rba rbb rbe rbk rbo rbp rbr rbt re- rea reb ree rek reo rep rer ret rja rjk rjp rjr rkb rke rkk rko rkp rkt roa rob roe roj rok roo rop ror rot rpa rpb rpe rpk rpo rpp rpr rpt rra rrb rrk rrp rrr rrt rta rtb rte rtj rtk rto rtp rtr rtt taa tab tae taj tak tao tap tar tat tba tbb tbe tbj tbk tbo tbp tbr tbt te- tea teb tee tej tek teo tep ter tet tje tjo tjp tjr tka tkb tke tkk tko tkp tkr tkt to- toa tob toe toj tok too top tor tot tpa tpb tpe tpj tpk tpo tpp tpr tpt tra trb tre trk tro trp trr trt tta ttb tte ttk tto ttp ttr ttt