-ana aaaa aaab aaan aaap aaar aaba aabb aabp aabt aana aanp aaon aaoo aapa aapo aapt aara aaro aarp aart aata aatt abaa abab aban abap abar abat abb- abba abbb abbo abbr abbt aboa abob abon aboo abor abot abpa abpn abpp abpr abra abro abta ana- anaa anab anan anao anap anar anat anba anbb anbo anna annb anno annt ano- anoa anon anor anp- anpa anpp anpr ant- anta anto antr antt aoba aonb aono aont aopo aora aorb aorn aort apan apao apap apar apat apba apbr apna apno apo- apon apoo apop apor apot appa appr appt apra aprn apro aprt apta aptn aptt arab aran arap arar arat arba arna arno arnt aroa arob aron aroo aror arpa arr- arra arro arrr arrt arta arto artr at-t ataa atab atan atap atar atat atna atno atob aton atop ator atot atpr atra atrn atro atrp atta attn atto attp attr baaa baan baar baat baba babb babo babr bana bann bano banp banr bant baon bapa bapp bapt bar- bara barb barn baro barr bart bata batn bato batt bbbb bbpr bnor bnpp bnrr bnta boab boan boar boat boba bobb bobo bona bonn bono bont boob boon boop boor boot bopa bopp bor- bora born boro borr bort bota botb botn boto bott bpot brab bran brao brat brna brno broa brob bron broo bror brot brrr btaa btan btbp btob btor btrt bttb naaa naab naan naar naat naba nabo nan- nana nanb nann nano nanp nant naor naot napa napb napo napp napt nara narn naro narp narr nart nata nato natp natt nbaa nbap nbar nbbo nbpa nbpp nnnn nnot nnpr nntn noaa noap noat noba nobo non- nona nonn nono nont noo- noob noon nooo noop noor noot nor- nora norb norn noro norr nort not- nota noto nott npap npat nppa npra nprt npta nptn nrab nrap nrna nron nrpn nrta ntap ntop ntpa ntto nttr oara oban obba obbo obon obor obot obra obro onab onan onar onat onna onno onon onor onpt onra ont- onto ooaa ooba oona oont oooo oora oort ootb ootp opan opap opar opo- opon opor oppa oppo opra optn opto orab oran orao orar orat orba orbb orbo orna orno oro- oron oror orot orra orro orta orto otan otap otar oto- oton otoo otor otpp otra otro otta otto paan paap paar paat paba pabt pan- pana pann pano pant paon papa papb papp papr par- para parn paro parp parr part pata pato patr patt pban pbar pbpa pnar pnon pnot pnpo pnpp pnra pnro pntr poan poar poat poba pobo pona pono ponp pont poon poop poor poot pop- popa popo popp popt pora porb porn poro porr port pota poto pott ppan ppap ppar ppoa pppa pppn pppo pppp ppta pptn pptt pran prao prar prat prna prnp pro- proa prob pron proo prop prot prtp prtr ptab ptop raab raan raat raba rabb rabo rana rann rano rant raob raop rapa rapp rapt rara rarb raro rata rato ratp ratt rbbb rbbr rnbr rnnt rnot rntp roab roan roap roar roat rob- roba robb robo robt rona rono ront roob roon roop roor root ropa ropo rora roro rort rota rotn roto rotr rott rpob rpon rppn rpta rptn rrat rrna rrrr rtan rtpa rttp taa- taan taar taat taba tabb tabo tana tann tano tant taoa taor tapa tapo tapp tapr tapt tara tarb tarn taro tarp tarr tart tata tatb tato tatr tatt tbar tbrb tbta tbtp toab toan toat toba tobo tobt tona tonb tonn tono tooa toon toor toot top- topa topo topp topt tora torn toro torp torr tort tota toto totr tott tpap tpon tppa tppp tppr tptp tptr traa trab tran trao trap trat trna trno troa tron troo trop trot trpa trpn trpp trra trtr ttab ttbb tton ttop tttt