a-do aaaa aaab aaad aaap aaas aaba aabb aabd aabp aabt aada aads aadt aaoo aapa aapo aaps aapt aasa aasd aass aast aata aatt abaa abab abad abap abas abat abb- abba abbb abbo abbs abbt abda abdo aboa abob abod aboo abos abot abpa abpd abpp abps abs- absa absd absp abss abta abts adaa adab adad adao adap adas adat adba adda addd addo adds adob adod adoo ados adot adp- adps adsa adso adss adst adta adts aoba aopo aosd aosp aoss aotd apao apap apas apat apba apbs apda apdd apds apo- apod apoo apop apos apot appa appd apps appt apsa apso apss apta apts aptt asaa asab asad asao asap asas asat asba asbo asda asdo asds asob asod asop asos asot aspa aspd aspo asps aspt assa assd asso assp asss asst asta astb asto astp asts at-t ataa atab atad atap atas atat atbs atdt atob atod atop atos atot atsb atst atta atto attp atts baaa baad baas baat baba babb babo babs bada badb badd bado bads baos bapa bapp baps bapt basa baso bass bast bata bato bats batt bbad bbas bbbb bbbs bbdd bbdo bdos bdsd boab boad boas boat boba bobb bobo bobs boda bodb bodo bods boob bood boop boos boot bopa bopp bops bosa boso boss bost bota botb botd boto bots bott bpda bpot bpsa bsaa bsap bsas bsat bsbd bsod bsos bspp bssd bsts btaa btbp btdt btob btps btss bttb d-bo daab daad daap daas daba dabb dabo dabp dabs dabt dada dado dads daos dapa dapp daps dasa dasb dasd dass dast data dato datp dats datt dbas dbos dbpd dbsa dbss dbtt dddd ddot ddpo ddps ddss ddts doab doap doas doat doba dobb dobs dod- doda dodd dodo dods doob dood doop doos doot dopa dopo dopp dops dopt dosa doso doss dost dota dotd doto dots dott dpaa dpdt dpos dppa dpsd dpst dpts dsap dsba dsda dsdp dsoa dsos dsps dspt dssa dssp dsst dsto dsts dtaa dtap dtdp dtot dtss dttp oaps oass oast oats obad obas obba obbo obdt obos obot obsd obss obst obtd obts odas odbo odda oddd odds odoo odop odos odot odso odts ooaa ooba ooda oooo ooos oops oosa oost ootb ootp oots opap opds opo- opos oppa oppo opps opsa opto opts osap osas osat osba osbp osoo osos ossa ossb ossd osso osta osts otap otas otbd otbs oto- otoo otos otpp otsa otso otta otto otts paap paas paat paba pabt pada padd pado pads paos papa papb papp paps pasa pasd paso pasp pass past pata patd pato pats patt pbpa pbsa pbsp pdas pdbs pdos pdpa pdsa pdsd pdss poad poas poat poba pobo pobs pod- poda podd podo pods pood poop poos poot pop- popa popo popp pops popt posa posb poso poss post pota potd poto pots pott ppad ppap ppds ppoa ppod ppos pppa pppd pppo pppp ppps ppss ppta ppts pptt psap psas psat psbd psbt psdp psds psoa psos pspp psps pssa psso psst psts ptab ptas ptop ptpd ptsa ptsd s-os saab saad saap saas saat saba sabb sabo sabs sada sadb sadd sado sads sadt saos sapa sapo sapp saps sasa sasd saso sass sast sata satb satd sato sats satt sbaa sbas sbbs sbds sbot sbsa sbsd sbsp sbst sdap sdba sdds sdot sdps sdss soad soap soas soat soba sobo sobp sobs sobt soda sodd sodo sods sood soop soos soot sopa sopd sopo sopp sops sosa soso soss sost sota soto sotp sots sp-a spad spap spas spat spdp spdt spod spoo spop spos spot sppd spps spsa spsd spso spsp spss spst spta sptb spto spts ssaa ssab ssao ssap ssas ssat ssdd ssdp ssop ssot sspa sspo ssps sspt sssa sssb ssss ssta sstb sstd sstp ssts stab stad stap stas stat stbd stbs stds stoa stob stod stoo stop stos stot stpd stpp stps stss sttd taa- taas taat taba tabb tabo tabs tada tado tads taoa taos tapa tapo tapp taps tapt tasa tasb tasp tass tast tata tatb tato tats tatt tbas tbbs tbsp tbst tbta tbtp tdap tddb tdss toab toad toas toat toba tobo tobs tobt toda todd todo tods todt tooa tood toos toot top- topa topd topo topp tops topt tosa tosb toso toss tost tota totd toto tots tott tpap tppa tppd tppp tpsa tptp tsaa tsao tsat tsbd tsdb tsob tsop tsos tspo tsps tspt tssa tsst tsts ttab ttbb ttop ttss tttt