a-a a-b a-i a-t aaa aab aai aao aap aar aas aat ab- aba abb abi abo abp abr abs abt ai- aia aib aii aio aip air ais ait aoa aob aoi aoo aop aor aos aot ap- apa apb api apo app apr aps apt ar- ara arb ari aro arp arr ars art as- asa asb asi aso asp asr ass ast at- ata atb ati ato atp atr ats att b-p baa bab bai bao bap bar bas bat bba bbb bbi bbo bbp bbr bbs bbt bi- bia bib bii bio bip bir bis bit boa bob boi boo bop bor bos bot bpa bpb bpi bpo bpp bpr bps bpt bra brb bri bro brp brr brs brt bsa bsb bsi bso bsp bsr bss bst bta btb bti bto btp btr bts btt ia- iaa iab iai iao iap iar ias iat iba ibb ibi ibo ibp ibr ibs ibt iia iib iii iio iip iir iis iit io- ioa iob ioi ioo iop ior ios iot ipa ipb ipi ipo ipp ipr ips ipt ir- ira irb iri iro irp irr irs irt is- isa isb isi iso isp isr iss ist ita itb iti ito itp its itt o-i oaa oab oai oao oap oar oas oat ob- oba obb obi obo obp obr obs obt oia oib oii oio oip oir ois oit oo- ooa oob ooi ooo oop oor oos oot op- opa opb opi opo opp opr ops opt or- ora orb ori oro orp orr ors ort os- osa osb osi oso osp osr oss ost ot- ota otb oti oto otp otr ots ott p-p paa pab pai pao pap par pas pat pba pbb pbi pbo pbp pbr pbs pbt pia pib pii pio pip pir pis pit poa pob poi poo pop por pos pot ppa ppb ppi ppo ppp ppr pps ppt pra prb pri pro prp prr prs prt ps- psa psb psi pso psp psr pss pst pt- pta ptb pti pto ptp ptr pts ptt ra- raa rab rai rao rap rar ras rat rba rbb rbi rbo rbp rbr rbs rbt ria rib rii rio rip rir ris rit roa rob roi roo rop ror ros rot rpa rpb rpi rpo rpp rpr rps rpt rra rrb rri rrp rrr rrs rrt rsa rsb rsi rso rsp rsr rss rst rta rtb rti rto rtp rtr rts rtt saa sab sai sao sap sar sas sat sba sbb sbi sbo sbp sbr sbs sbt sia sib sii sio sip sir sis sit soa sob soi soo sop sor sos sot spa spb spi spo spp spr sps spt sr- sra srb sri sro srp srr srs srt ss- ssa ssb ssi sso ssp ssr sss sst sta stb sti sto stp str sts stt taa tab tai tao tap tar tas tat tba tbb tbi tbo tbp tbr tbs tbt tia tib tii tio tip tir tis tit to- toa tob toi too top tor tos tot tpa tpb tpi tpo tpp tpr tps tpt tra trb tri tro trp trr trs trt tsa tsb tsi tso tsp tsr tss tst tta ttb tti tto ttp ttr tts ttt

a-ii aaaa aaab aaai aaap aaar aaas aaba aabb aabi aabp aabt aaib aaii aais aaoo aapa aapi aapo aaps aapt aara aari aaro aarp aars aart aasa aasi aass aast aata aatt abaa abab abai abap abar abas abat abb- abba abbb abbi abbo abbr abbs abbt abia abib abir abis abit aboa abob aboo abor abos abot abpa abpi abpp abpr abps abra abri abro abrs abs- absa absi absp abss abta abts aiai aias aiba aibo aiia aiib aiir aioi aipa aipi aips aira airi airo airp airs airt aisa aisb aisi aiso aisr aist aita aiti aitr aits aitt aoba aopo aora aorb aors aort aosp aoss apai apao apap apar apas apat apba apbr apbs api- apia apio apip apis apit apo- apoo apop apor apos apot appa appr apps appt apra apri apro aprs aprt apsa apsi apso apss apta apti apts aptt arab arai arap arar aras arat arba arbi arbs aria arib arii ario arip aris arit aroa arob aroi aroo aror aros arpa arpi arps arr- arra arri arro arrr arrs arrt ars- arsa arsi arso arst arta arti arto artr arts asaa asab asai asao asap asar asas asat asba asbo asia asii asio asip asir asis asit asob asoi asop asor asos asot aspa aspi aspo aspr asps aspt asra asro asrs assa assi asso assp assr asss asst asta astb asti asto astp astr asts at-t ataa atab atai atap atar atas atat atbs atia atip atis atit atob atoi atop ator atos atot atpr atra atri atro atrp atsb atsi atst atta atti atto attp attr atts ba-i baaa baar baas baat baba babb babi babo babr babs baia baib baio bair bais bait baos bapa bapi bapp baps bapt bar- bara barb bari baro barr bars bart basa basi baso bass bast bata bati bato bats batt bbas bbbb bbbs bbpr biao biap biar bias biat biba bibb bibi bibo bibs biis bio- bioi bios biot bipa bipp bips bira birb biri biro birr birs birt bis- bisa biso bisp biss bist bita bito bits bitt boab boai boar boas boat boba bobb bobi bobo bobs boi- boii bois boit boob boop boor boos boot bopa bopp bops bor- bora bori boro borr bors bort bosa bosi boso boss bost bota botb boti boto bots bott bpai bpot bpsa bpti brab brai brao bras brat bria brio bris brit broa brob broo bror bros brot brrr brrs brsb brsr brst bsaa bsap bsas bsat bsos bspp bspr bsra bsts btaa btbp btob btor btps btrt btss bttb iaaa iaai iaap iaas iaat iaba iaia iais iapa iapp iaps iapt iara iars iart iasa iasi iaso iasp iasr iata iati ibar ibas ibat ibia ibis ibos ibot