a-a a-b a-t aaa aab aao aap aar aat ab- aba abb abo abp abr abt aoa aob aoo aop aor aot ap- apa apb apo app apr apt ar- ara arb aro arp arr art at- ata atb ato atp atr att b-p baa bab bao bap bar bat bba bbb bbo bbp bbr bbt boa bob boo bop bor bot bpa bpb bpo bpp bpr bpt bra brb bro brp brr brt bta btb bto btp btr btt oaa oab oao oap oar oat ob- oba obb obo obp obr obt oo- ooa oob ooo oop oor oot op- opa opb opo opp opr opt or- ora orb oro orp orr ort ot- ota otb oto otp otr ott p-p paa pab pao pap par pat pba pbb pbo pbp pbr pbt poa pob poo pop por pot ppa ppb ppo ppp ppr ppt pra prb pro prp prr prt pt- pta ptb pto ptp ptr ptt ra- raa rab rao rap rar rat rba rbb rbo rbp rbr rbt roa rob roo rop ror rot rpa rpb rpo rpp rpr rpt rra rrb rrp rrr rrt rta rtb rto rtp rtr rtt taa tab tao tap tar tat tba tbb tbo tbp tbr tbt to- toa tob too top tor tot tpa tpb tpo tpp tpr tpt tra trb tro trp trr trt tta ttb tto ttp ttr ttt

aaaa aaab aaap aaar aaba aabb aabp aabt aaoo aapa aapo aapt aara aaro aarp aart aata aatt abaa abab abap abar abat abb- abba abbb abbo abbr abbt aboa abob aboo abor abot abpa abpp abpr abra abro abta aoba aopo aora aorb aort apao apap apar apat apba apbr apo- apoo apop apor apot appa appr appt apra apro aprt apta aptt arab arap arar arat arba aroa arob aroo aror arpa arr- arra arro arrr arrt arta arto artr at-t ataa atab atap atar atat atob atop ator atot atpr atra atro atrp atta atto attp attr baaa baar baat baba babb babo babr bapa bapp bapt bar- bara barb baro barr bart bata bato batt bbbb bbpr boab boar boat boba bobb bobo boob boop boor boot bopa bopp bor- bora boro borr bort bota botb boto bott bpot brab brao brat broa brob broo bror brot brrr btaa btbp btob btor btrt bttb oara obba obbo obor obot obra obro ooaa ooba oooo oora oort ootb ootp opap opar opo- opor oppa oppo opra opto orab orao orar orat orba orbb orbo oro- oror orot orra orro orta orto otap otar oto- otoo otor otpp otra otro otta otto paap paar paat paba pabt papa papb papp papr par- para paro parp parr part pata pato patr patt pbar pbpa poar poat poba pobo poop poor poot pop- popa popo popp popt pora porb poro porr port pota poto pott ppap ppar ppoa pppa pppo pppp ppta pptt prao prar prat pro- proa prob proo prop prot prtp prtr ptab ptop raab raat raba rabb rabo raob raop rapa rapp rapt rara rarb raro rata rato ratp ratt rbbb rbbr roab roap roar roat rob- roba robb robo robt roob roop roor root ropa ropo rora roro rort rota roto rotr rott rpob rpta rrat rrrr rtpa rttp taa- taar taat taba tabb tabo taoa taor tapa tapo tapp tapr tapt tara tarb taro tarp tarr tart tata tatb tato tatr tatt tbar tbrb tbta tbtp toab toat toba tobo tobt tooa toor toot top- topa topo topp topt tora toro torp torr tort tota toto totr tott tpap tppa tppp tppr tptp tptr traa trab trao trap trat troa troo trop trot trpa trpp trra trtr ttab ttbb ttop tttt

-aaa- a-a-p aaata aabaa aabba aabra aarop abaab ababa abapo abara abbar abbat abbot aboab aboat abobo aboot abora abort abott abrar abtaa abtao abtar aort- aorta apapa apar- apara apart apata apatt apoop apoor apopa apopo apopt aporo aport appar appro aptto ar-ab araat arab- araba arabo arara arata arbab arbar arbat arbor arbot aroab aroar aroba aroor aroot aropa arora arpar artar artat arto- artoo artot atapr atara atbar atbat atoot atora atorp atoto atpar atrab atrap atro- atroa atrot attap attar atto- attra baaop baart baata babar baboo babot babra baoro bapat bapta baraa barab barao barar barat barba baro- baroa baroo baror barot barra barro barta barto batab batar batat batob batoo bator batra batta batto bbart bo-bo boaro boart bobar bobr booat booba boora boort boota borat borba borbo boro- boroa boroo borot borra borro botar botro botta braat bratt brobo brora broto brrar brrrr btr-t o-r-b oaror obaba obara obata obora oboro obrab obrat ooooo opara opart opata opobo opto- optot optto oraba orapa orara orato orbot orobo oropa ortoo otara otoba ototo otpor otrar ottar paara paarp paart pabbo pabra paoro paota papa- papar papat papop pappa pappo para- parao parat paroa paroo parot parr- parra parro parta partb parto patr- patra patro patta patto po-po pobra poopo poora poort popat popop poppa poppo porab porat porba poro- porra porro porta porto potap potoo potop potor potro potta potto pppoa praat prata prato pratt proap proat proba probo proor proot prop- propp propr propt prora prot- prota proto prtor ptpra ptprb ptpro ptprr ptprt ptrap ra-ra raaba raaor rabab rabap rabat rabba rabor rabot rabta rapar rapat rapor rappa rapto raptr ratba ratot ratra ratta ratto rboat ro-ro robab robar robat robbo robo- robop robor robot robrt rooba roopa roota ropar rorra rota- rotap rotar roto- rotoa rotor rotot rotta rotto rprop rptor t-ara t-bar t-pop t-top ta-ra ta-ta taabo taart tabar tabat tabo- taboo tabor tabot tabra tapat tapoa tappa tappr tarap tarar tarat tarob taroo tarot tarpa tarpt tarra tarro tarta tartt tataa tatao tatar tatoo tator tatra tatta tatto tbtbt tobar tobat tobor tobot toora topar topat topbt topo- topor topot toppo toptb topto torab torat torba toroa torob torpa torpo torro torta torto toto- totoo totop totra totta tprot traba traor