a-a a-b aaa aab aad aao aap aar aas ab- aba abb abd abo abp abr abs ad- ada adb add ado adp adr ads aoa aob aod aoo aop aor aos ap- apa apb apd apo app apr aps ar- ara arb ard aro arp arr ars as- asa asb asd aso asp asr ass b-p baa bab bad bao bap bar bas bba bbb bbd bbo bbp bbr bbs bda bdb bdd bdo bdp bdr bds boa bob bod boo bop bor bos bpa bpb bpd bpo bpp bpr bps bra brb brd bro brp brr brs bsa bsb bsd bso bsp bsr bss daa dab dad dao dap dar das dba dbb dbd dbo dbp dbr dbs dda ddb ddd ddo ddp ddr dds doa dob dod doo dop dor dos dpa dpb dpd dpo dpp dpr dps dra drb drd dro drp drr drs dsa dsb dsd dso dsp dsr dss oaa oab oad oao oap oar oas ob- oba obb obd obo obp obr obs oda odb odd odo odp odr ods oo- ooa oob ood ooo oop oor oos op- opa opb opd opo opp opr ops or- ora orb ord oro orp orr ors os- osa osb osd oso osp osr oss p-p paa pab pad pao pap par pas pba pbb pbd pbo pbp pbr pbs pda pdb pdd pdo pdp pdr pds poa pob pod poo pop por pos ppa ppb ppd ppo ppp ppr pps pra prb prd pro prp prr prs ps- psa psb psd pso psp psr pss ra- raa rab rad rao rap rar ras rba rbb rbd rbo rbp rbr rbs rda rdb rdd rdo rdp rdr rds roa rob rod roo rop ror ros rpa rpb rpd rpo rpp rpr rps rra rrb rrd rrp rrr rrs rsa rsb rsd rso rsp rsr rss saa sab sad sao sap sar sas sba sbb sbd sbo sbp sbr sbs sda sdb sdd sdo sdp sdr sds soa sob sod soo sop sor sos spa spb spd spo spp spr sps sr- sra srb srd sro srp srr srs ss- ssa ssb ssd sso ssp ssr sss

a-do aaaa aaab aaad aaap aaar aaas aaba aabb aabd aabp aada aads aaoo aapa aapo aaps aara aard aaro aarp aars aasa aasd aass abaa abab abad abap abar abas abb- abba abbb abbo abbr abbs abda abdo aboa abob abod aboo abor abos abpa abpd abpp abpr abps abra abro abrs abs- absa absd absp abss adaa adab adad adao adap adar adas adba adda addd addo addr adds adob adod adoo ador ados adp- adps adra adro adrs adsa adso adsr adss aoba aopo aora aorb aors aosd aosp aoss apao apap apar apas apba apbr apbs apda apdd apds apo- apod apoo apop apor apos appa appd appr apps apra apro aprs apsa apso apss arab arad arap arar aras arba arbs arda ardo ards aroa arob arod aroo aror aros arpa arps arr- arra arro arrr arrs ars- arsa arsd arso asaa asab asad asao asap asar asas asba asbo asda asdo asds asob asod asop asor asos aspa aspd aspo aspr asps asra asro asrs assa assd asso assp assr asss baaa baad baar baas baba babb babo babr babs bada badb badd bado badr bads baos bapa bapp baps bar- bara barb bard baro barr bars basa baso bass bbad bbas bbbb bbbs bbdd bbdo bbpr bd-r bdos bdsd boab boad boar boas boba bobb bobo bobs boda bodb bodo bods boob bood boop boor boos bopa bopp bops bor- bora bord boro borr bors bosa boso boss bpda bprd bpsa brab brad brao bras brda brdo brds broa brob brod broo bror bros brrr brrs brsb brsr bsaa bsap bsas bsbd bsod bsos bspp bspr bsra bsrd bssd d-bo daab daad daap daar daas daba dabb dabo dabp dabs dada dado dads daos dapa dapp daps dara darb dard daro darp darr dars dasa dasb dasd dass dbar dbas dbos dbpd dbrs dbsa dbss dddd ddpo ddps ddss doab doap doar doas doba dobb dobs dod- doda dodd dodo dods doob dood doop door doos dopa dopo dopp dopr dops dora dord doro dorp dorr dors dosa doso doss dpaa dpos dppa dpsd draa drab drad drap drar dras drba drda drob drod drop drra drrs drsa drsp dsap dsba dsda dsdp dsdr dsoa dsos dsps dsrp dsrr dssa dssp oaps oara oars oass obad obas obba obbo obor obos obra obro obsd obsr obss odas odbo odda oddd odds odoo odop odor odos odra odrp odso ooaa ooba ooda oooo ooos oops oora oord oosa opap opar opds opo- opor opos oppa oppo opps opra opsa orab orad orao orar oras orba orbb orbo orbs orda ordo ords oro- oror oros orps orra orro orrs orsa orso osap osar osas osba osbp osoo osor osos osrd osro ossa ossb ossd osso paap paar paas paba pada padd pado pads paos papa papb papp papr paps par- para pard paro parp parr pars pasa pasd paso pasp pass pbar pbpa pbrs pbsa pbsp pdas pdbs pdos pdpa pdpr pdrs pdsa pdsd pdss poad poar poas poba pobo pobs pod- poda podd podo pods pood poop poor poos pop- popa popo popp pops pora porb poro porr pors posa posb poso poss ppad ppap ppar ppds ppoa ppod ppos pppa pppd pppo pppp ppps ppss prad prao prar pras prbs pro- proa prob prod proo prop pros prpd prps prrd prrs prsa prsd prso prss psap psas psbd psbr psdp psdr psds psoa psos pspp pspr psps psrd psrp pssa psso raab raad raas raba rabb rabo rabs rada radd rado radr rads raob raop raos rapa rapd rapp raps rara rarb raro rars rasa rasd raso rasp rass rbbb rbbr rbbs rbds rbsd rbsp rbss rdap rdas rdbp rdos rdso roab road roap roar roas rob- roba robb robo robs roda rodd rodo rods roob rood roop roor roos ropa ropo rops