a-do aaaa aaab aaad aaap aaar aaba aabb aabd aabp aabt aada aadt aaoo aapa aapo aapt aara aard aaro aarp aart aata aatt abaa abab abad abap abar abat abb- abba abbb abbo abbr abbt abda abdo aboa abob abod aboo abor abot abpa abpd abpp abpr abra abro abta adaa adab adad adao adap adar adat adba adda addd addo addr adob adod adoo ador adot adp- adra adro adta aoba aopo aora aorb aort aotd apao apap apar apat apba apbr apda apdd apo- apod apoo apop apor apot appa appd appr appt apra apro aprt apta aptt arab arad arap arar arat arba arda ardo aroa arob arod aroo aror arpa arr- arra arro arrr arrt arta arto artr at-t ataa atab atad atap atar atat atdt atob atod atop ator atot atpr atra atro atrp atta atto attp attr baaa baad baar baat baba babb babo babr bada badb badd bado badr bapa bapp bapt bar- bara barb bard baro barr bart bata bato batt bbad bbbb bbdd bbdo bbpr bd-r boab boad boar boat boba bobb bobo boda bodb bodo boob bood boop boor boot bopa bopp bor- bora bord boro borr bort bota botb botd boto bott bpda bpot bprd brab brad brao brat brda brdo brdt broa brob brod broo bror brot brrr btaa btbp btdt btob btor btrt bttb d-bo daab daad daap daar daba dabb dabo dabp dabt dada dado dapa dapp dara darb dard daro darp darr dart data dato datp datr datt dbar dbpd dbtt dddd ddot ddpo doab doap doar doat doba dobb dod- doda dodd dodo doob dood doop door doot dopa dopo dopp dopr dopt dora dord doro dorp dorr dort dota dotd doto dott dpaa dpdt dppa draa drab drad drap drar drat drba drda drob drod drop drot drra dtaa dtap dtdp dtor dtot dttp oara obad obba obbo obdt obor obot obra obro obtd odbo odda oddd odoo odop odor odot odra odrp ooaa ooba ooda oooo oora oord oort ootb ootp opap opar opo- opor oppa oppo opra opto orab orad orao orar orat orba orbb orbo orda ordo oro- oror orot orra orro orta orto otap otar otbd oto- otoo otor otpp otra otro otta otto paap paar paat paba pabt pada padd pado papa papb papp papr par- para pard paro parp parr part pata patd pato patr patt pbar pbpa pdpa pdpr poad poar poat poba pobo pod- poda podd podo pood poop poor poot pop- popa popo popp popt pora porb poro porr port pota potd poto pott ppad ppap ppar ppoa ppod pppa pppd pppo pppp ppta pptt prad prao prar prat pro- proa prob prod proo prop prot prpd prrd prtp prtr ptab ptop ptpd ptrd raab raad raat raba rabb rabo rada radd rado radr radt raob raop rapa rapd rapp rapt rara rarb raro rata rato ratp ratt rbbb rbbr rdap rdbp roab road roap roar roat rob- roba robb robo robt roda rodd rodo roob rood roop roor root ropa ropo rora roro rort rota roto rotr rott rpdp rpob rpta rptd rrad rrat rrrr rtdt rtpa rttp taa- taar taat taba tabb tabo tada tado taoa taor tapa tapo tapp tapr tapt tara tarb tard taro tarp tarr tart tata tatb tato tatr tatt tbar tbrb tbta tbtp tdap tddb tdor tdra toab toad toat toba tobo tobt toda todd todo todt tooa tood toor toot top- topa topd topo topp topt tora tord toro torp torr tort tota totd toto totr tott tpap tppa tppd tppp tppr tptp tptr traa trab trad trao trap trat troa trod troo trop trot trpa trpp trra trtr ttab ttbb ttop tttt