-ic a-a a-b a-c a-i aaa aab aac aai aao aap aar aas ab- aba abb abc abi abo abp abr abs ac- aca acb acc aci aco acp acr acs ai- aia aib aic aii aio aip air ais aoa aob aoc aoi aoo aop aor aos ap- apa apb apc api apo app apr aps ar- ara arb arc ari aro arp arr ars as- asa asb asc asi aso asp asr ass b-p baa bab bac bai bao bap bar bas bba bbb bbc bbi bbo bbp bbr bbs bca bcb bcc bci bco bcp bcr bcs bi- bia bib bic bii bio bip bir bis boa bob boc boi boo bop bor bos bpa bpb bpc bpi bpo bpp bpr bps bra brb bri bro brp brr brs bsa bsb bsc bsi bso bsp bsr bss c-- caa cab cac cai cao cap car cas cba cbb cbc cbi cbo cbp cbr cbs cca ccb ccc cci cco ccp ccr ccs ci- cia cib cic cii cio cip cir cis co- coa cob coc coi coo cop cor cos cpa cpb cpc cpi cpo cpp cpr cps cra crb crc cri cro crp crr crs csa csb csc csi cso csp csr css ia- iaa iab iac iai iao iap iar ias iba ibb ibc ibi ibo ibp ibr ibs ica icb icc ici ico icp icr ics iia iib iic iii iio iip iir iis io- ioa iob ioc ioi ioo iop ior ios ipa ipb ipc ipi ipo ipp ipr ips ir- ira irb irc iri iro irp irr irs is- isa isb isc isi iso isp isr iss o-i oaa oab oac oai oao oap oar oas ob- oba obb obc obi obo obp obr obs oc- oca ocb occ oci oco ocp ocr ocs oia oib oic oii oio oip oir ois oo- ooa oob ooc ooi ooo oop oor oos op- opa opb opc opi opo opp opr ops or- ora orb orc ori oro orp orr ors os- osa osb osc osi oso osp osr oss p-p paa pab pac pai pao pap par pas pba pbb pbc pbi pbo pbp pbr pbs pca pcb pcc pci pco pcp pcr pcs pia pib pic pii pio pip pir pis poa pob poc poi poo pop por pos ppa ppb ppc ppi ppo ppp ppr pps pra prb prc pri pro prp prr prs ps- psa psb psc psi pso psp psr pss ra- raa rab rac rai rao rap rar ras rba rbb rbc rbi rbo rbp rbr rbs rca rcb rcc rci rco rcp rcr rcs ria rib ric rii rio rip rir ris roa rob roc roi roo rop ror ros rpa rpb rpc rpi rpo rpp rpr rps rra rrb rrc rri rrp rrr rrs rsa rsb rsc rsi rso rsp rsr rss saa sab sac sai sao sap sar sas sba sbb sbc sbi sbo sbp sbr sbs sca scb scc sci sco scp scr scs sia sib sic sii sio sip sir sis soa sob soc soi soo sop sor sos spa spb spc spi spo spp spr sps sr- sra srb src sri sro srp srr srs ss- ssa ssb ssc ssi sso ssp ssr sss

a-ii aaaa aaab aaac aaai aaap aaar aaas aaba aabb aabc aabi aabp aaca aacb aacc aaci aaco aacp aacr aacs aaib aaic aaii aais aaoo aapa aapc aapi aapo aaps aara aarc aari aaro aarp aars aasa aasc aasi aass abaa abab abac abai abap abar abas abb- abba abbb abbi abbo abbr abbs abca abcb abcc abci abcp abcr abcs abia abib abic abir abis aboa abob aboo abor abos abpa abpc abpi abpp abpr abps abra abrc abri abro abrs abs- absa absi absp abss acaa acab acac acai acap acar acas acba acca accc acci acco accp accs aci- acia acic acip acir acis acoa acop acor acos acpa acpi acpr acps acr- acra acrc acri acro acrr acrs acsa acsc acsi acss aiai aias aiba aibo aica aicc aicp aicr aics aiia aiib aiic aiir aioc aioi aipa aipi aips aira airi airo airp airs aisa aisb aisi aiso aisr aoba aoca aocs aopo aora aorb aors aosp aoss apac apai apao apap apar apas apba apbr apbs apca apcb apcc apco apcr apcs api- apia apic apio apip apis apo- apoc apoo apop apor apos appa appc appr apps apra aprc apri apro aprs apsa apsi apso apss arab arac arai arap arar aras arba arbi arbs arc- arca arci arco arcs aria arib arii ario arip aris aroa arob aroi aroo aror aros arpa arpi arps arr- arra arrc arri arro arrr arrs ars- arsa arsc arsi arso asaa asab asac asai asao asap asar asas asba asbo asc- asca ascb ascc asci asco ascp ascr asia asic asii asio asip asir asis asob asoc asoi asop asor asos aspa aspc aspi aspo aspr asps asra asrc asro asrs assa assc assi asso assp assr asss ba-i baaa baar baas baba babb babi babo babr babs bac- baca bacc baci baco bacs baia baib baic baio bair bais baos bapa bapc bapi bapp baps bar- bara barb barc bari baro barr bars basa basc basi baso bass bbas bbbb bbbs bbci bbpr bbrc bcaa bcap bcar bcas bcbc bcbp bcbs bcca bccc bcci bccs bcia bcis bcor bcos bcpp bcps bcra bcrs bcsa bcsc bcss biao biap biar bias biba bibb bibi bibo bibs bica bicc bici bico bics biis bio- bioc bioi bios bipa bipp bips bira birb biri biro birr birs bis- bisa bisc biso bisp biss boab boac boai boar boas boba bobb bobi bobo bobs boca boco bocs boi- boii bois boob booc boop boor boos bopa bopp bops bor- bora bori boro borr bors bosa bosc bosi boso boss bpai bpcp bprc bpsa brab brac brai brao bras brca brcb bria bric brio bris broa brob broc broo bror bros brrr brrs brsb brsr bsaa bsac