a-a a-b a-t aaa aab aad aao aap aar aas aat ab- aba abb abd abo abp abr abs abt ad- ada adb add ado adp adr ads adt aoa aob aod aoo aop aor aos aot ap- apa apb apd apo app apr aps apt ar- ara arb ard aro arp arr ars art as- asa asb asd aso asp asr ass ast at- ata atb atd ato atp atr ats att b-p baa bab bad bao bap bar bas bat bba bbb bbd bbo bbp bbr bbs bbt bda bdb bdd bdo bdp bdr bds bdt boa bob bod boo bop bor bos bot bpa bpb bpd bpo bpp bpr bps bpt bra brb brd bro brp brr brs brt bsa bsb bsd bso bsp bsr bss bst bta btb btd bto btp btr bts btt daa dab dad dao dap dar das dat dba dbb dbd dbo dbp dbr dbs dbt dda ddb ddd ddo ddp ddr dds ddt doa dob dod doo dop dor dos dot dpa dpb dpd dpo dpp dpr dps dpt dra drb drd dro drp drr drs drt dsa dsb dsd dso dsp dsr dss dst dta dtb dtd dto dtp dtr dts dtt oaa oab oad oao oap oar oas oat ob- oba obb obd obo obp obr obs obt oda odb odd odo odp odr ods odt oo- ooa oob ood ooo oop oor oos oot op- opa opb opd opo opp opr ops opt or- ora orb ord oro orp orr ors ort os- osa osb osd oso osp osr oss ost ot- ota otb otd oto otp otr ots ott p-p paa pab pad pao pap par pas pat pba pbb pbd pbo pbp pbr pbs pbt pda pdb pdd pdo pdp pdr pds pdt poa pob pod poo pop por pos pot ppa ppb ppd ppo ppp ppr pps ppt pra prb prd pro prp prr prs prt ps- psa psb psd pso psp psr pss pst pt- pta ptb ptd pto ptp ptr pts ptt ra- raa rab rad rao rap rar ras rat rba rbb rbd rbo rbp rbr rbs rbt rda rdb rdd rdo rdp rdr rds rdt roa rob rod roo rop ror ros rot rpa rpb rpd rpo rpp rpr rps rpt rra rrb rrd rrp rrr rrs rrt rsa rsb rsd rso rsp rsr rss rst rta rtb rtd rto rtp rtr rts rtt saa sab sad sao sap sar sas sat sba sbb sbd sbo sbp sbr sbs sbt sda sdb sdd sdo sdp sdr sds sdt soa sob sod soo sop sor sos sot spa spb spd spo spp spr sps spt sr- sra srb srd sro srp srr srs srt ss- ssa ssb ssd sso ssp ssr sss sst sta stb std sto stp str sts stt taa tab tad tao tap tar tas tat tba tbb tbd tbo tbp tbr tbs tbt tda tdb tdd tdo tdp tdr tds tdt to- toa tob tod too top tor tos tot tpa tpb tpd tpo tpp tpr tps tpt tra trb trd tro trp trr trs trt tsa tsb tsd tso tsp tsr tss tst tta ttb ttd tto ttp ttr tts ttt

a-do aaaa aaab aaad aaap aaar aaas aaba aabb aabd aabp aabt aada aads aadt aaoo aapa aapo aaps aapt aara aard aaro aarp aars aart aasa aasd aass aast aata aatt abaa abab abad abap abar abas abat abb- abba abbb abbo abbr abbs abbt abda abdo aboa abob abod aboo abor abos abot abpa abpd abpp abpr abps abra abro abrs abs- absa absd absp abss abta abts adaa adab adad adao adap adar adas adat adba adda addd addo addr adds adob adod adoo ador ados adot adp- adps adra adro adrs adsa adso adsr adss adst adta adts aoba aopo aora aorb aors aort aosd aosp aoss aotd apao apap apar apas apat apba apbr apbs apda apdd apds apo- apod apoo apop apor apos apot appa appd appr apps appt apra apro aprs aprt apsa apso apss apta apts aptt arab arad arap arar aras arat arba arbs arda ardo ards aroa arob arod aroo aror aros arpa arps arr- arra arro arrr arrs arrt ars- arsa arsd arso arst arta arto artr arts asaa asab asad asao asap asar asas asat asba asbo asda asdo asds asob asod asop asor asos asot aspa aspd aspo aspr asps aspt asra asro asrs assa assd asso assp assr asss asst asta astb asto astp astr asts at-t ataa atab atad atap atar atas atat atbs atdt atob atod atop ator atos atot atpr atra atro atrp atsb atst atta atto attp attr atts baaa baad baar baas baat baba babb babo babr babs bada badb badd bado badr bads baos bapa bapp baps bapt bar- bara barb bard baro barr bars bart basa baso bass bast bata bato bats batt bbad bbas bbbb bbbs bbdd bbdo bbpr bd-r bdos bdsd boab boad boar boas boat boba bobb bobo bobs boda bodb bodo bods boob bood boop boor boos boot bopa bopp bops bor- bora bord boro borr bors bort bosa boso boss bost bota botb botd boto bots bott bpda bpot bprd bpsa brab brad brao bras brat brda brdo brds brdt broa brob brod broo bror bros brot brrr brrs brsb brsr brst bsaa bsap bsas bsat bsbd bsod bsos bspp bspr bsra bsrd bssd bsts btaa btbp btdt btob btor btps btrt btss bttb d-bo daab daad daap daar daas daba dabb dabo dabp dabs dabt dada dado dads daos dapa dapp daps dara darb dard daro darp darr dars dart dasa dasb dasd dass dast data dato datp datr dats datt dbar dbas dbos dbpd dbrs dbsa dbss dbtt dddd ddot ddpo ddps ddss ddts doab doap doar doas doat doba dobb dobs dod- doda dodd dodo dods doob dood doop door doos doot dopa dopo dopp dopr dops dopt dora dord doro dorp dorr dors dort dosa doso