a-a a-b a-t aaa aab aad aao aap aas aat ab- aba abb abd abo abp abs abt ad- ada adb add ado adp ads adt aoa aob aod aoo aop aos aot ap- apa apb apd apo app aps apt as- asa asb asd aso asp ass ast at- ata atb atd ato atp ats att b-p baa bab bad bao bap bas bat bba bbb bbd bbo bbp bbs bbt bda bdb bdd bdo bdp bds bdt boa bob bod boo bop bos bot bpa bpb bpd bpo bpp bps bpt bsa bsb bsd bso bsp bss bst bta btb btd bto btp bts btt daa dab dad dao dap das dat dba dbb dbd dbo dbp dbs dbt dda ddb ddd ddo ddp dds ddt doa dob dod doo dop dos dot dpa dpb dpd dpo dpp dps dpt dsa dsb dsd dso dsp dss dst dta dtb dtd dto dtp dts dtt oaa oab oad oao oap oas oat ob- oba obb obd obo obp obs obt oda odb odd odo odp ods odt oo- ooa oob ood ooo oop oos oot op- opa opb opd opo opp ops opt os- osa osb osd oso osp oss ost ot- ota otb otd oto otp ots ott p-p paa pab pad pao pap pas pat pba pbb pbd pbo pbp pbs pbt pda pdb pdd pdo pdp pds pdt poa pob pod poo pop pos pot ppa ppb ppd ppo ppp pps ppt ps- psa psb psd pso psp pss pst pt- pta ptb ptd pto ptp pts ptt saa sab sad sao sap sas sat sba sbb sbd sbo sbp sbs sbt sda sdb sdd sdo sdp sds sdt soa sob sod soo sop sos sot spa spb spd spo spp sps spt ss- ssa ssb ssd sso ssp sss sst sta stb std sto stp sts stt taa tab tad tao tap tas tat tba tbb tbd tbo tbp tbs tbt tda tdb tdd tdo tdp tds tdt to- toa tob tod too top tos tot tpa tpb tpd tpo tpp tps tpt tsa tsb tsd tso tsp tss tst tta ttb ttd tto ttp tts ttt

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