-ic a-a a-b a-c a-i aaa aab aac aah aai aak aao aap aar aas ab- aba abb abc abh abi abk abo abp abr abs ac- aca acb acc ach aci ack aco acp acr acs aha ahb ahc ahh ahi ahk aho ahp ahr ahs ai- aia aib aic aih aii aik aio aip air ais aka akb akc akh aki akk ako akp akr aks aoa aob aoc aoh aoi aok aoo aop aor aos ap- apa apb apc aph api apk apo app apr aps ar- ara arb arc arh ari ark aro arp arr ars as- asa asb asc ash asi ask aso asp asr ass b-p baa bab bac bah bai bak bao bap bar bas bba bbb bbc bbh bbi bbk bbo bbp bbr bbs bca bcb bcc bch bci bck bco bcp bcr bcs bha bhb bhc bhh bhi bhk bho bhp bhr bhs bi- bia bib bic bih bii bik bio bip bir bis bka bkb bkc bkk bko bkp bkr bks boa bob boc boh boi bok boo bop bor bos bpa bpb bpc bph bpi bpo bpp bpr bps bra brb brh bri brk bro brp brr brs bsa bsb bsc bsh bsi bsk bso bsp bsr bss c-- caa cab cac cah cai cak cao cap car cas cba cbb cbc cbh cbi cbk cbo cbp cbr cbs cca ccb ccc cch cci cck cco ccp ccr ccs ch- cha chb chc chh chi chk cho chp chr chs ci- cia cib cic cih cii cik cio cip cir cis cka ckb ckc ckh cki cko cks co- coa cob coc coh coi cok coo cop cor cos cpa cpb cpc cph cpi cpk cpo cpp cpr cps cra crb crc crh cri crk cro crp crr crs csa csb csc csh csi csk cso csp csr css h-i haa hab hac hah hai hak hao hap har has hba hbb hbc hbh hbi hbk hbo hbp hbr hbs hca hcb hcc hch hci hck hco hcp hcr hcs hha hhb hhc hhh hhi hhk hho hhp hhr hhs hia hib hic hih hii hik hio hip hir his hka hkb hkh hki hkk hko hkp hkr hks hoa hob hoc hoh hoi hok hoo hop hor hos hpa hpb hpc hph hpi hpk hpo hpp hpr hps hr- hra hrb hrc hrh hri hrk hro hrp hrr hrs hsa hsb hsc hsh hsi hsk hsp hsr hss ia- iaa iab iac iah iai iao iap iar ias iba ibb ibc ibh ibi ibk ibo ibp ibr ibs ica icb icc ich ici ick ico icp icr ics iha ihb ihc ihh ihi ihk iho ihp ihr ihs iia iib iic iih iii iio iip iir iis ika ikb ikc iki ikk iko ikr iks io- ioa iob ioc ioh ioi ioo iop ior ios ipa ipb ipc ipi ipo ipp ipr ips ir- ira irb irc iri irk iro irp irr irs is- isa isb isc ish isi isk iso isp isr iss ka- kaa kab kac kah kai kak kao kap kar kas kba kbb kbc kbh kbi kbk kbo kbp kbr kbs kca kcb kcc kch kci kck kcp kcr kcs kha khh khi khk kho khr khs kia kib kic kih kii kik kio kip kir kis kkb kkc kkh kki kkk kkp kkr kks koa kob koc koh koi kok koo kop kor kos kpa kpc kph kpi kpk kpo kpp kpr kps kra krc kri krk kro krp krr krs ksa ksb ksc ksh ksi ksk kso ksp ksr kss o-i oaa oab oac oah oai oak oao oap oar oas ob- oba obb obc obh obi obk obo obp obr obs oc- oca ocb occ och oci ock oco ocp ocr ocs oha ohc ohh ohi oho ohp ohr ohs oia oib oic oii oik oio oip oir ois oka okb okc oki okk oko okp okr oks oo- ooa oob ooc ooh ooi ook ooo oop oor oos op- opa opb opc oph opi opk opo opp opr ops or- ora orb orc orh ori ork oro orp orr ors os- osa osb osc osh osi osk oso osp osr oss p-p paa pab pac pah pai pak pao pap par pas pba pbb pbc pbi pbk pbo pbp pbr pbs pca pcb pcc pch pci pck pco pcp pcr pcs pha phb phc phi phk pho php phr phs pia pib pic pih pii pik pio pip pir pis pka pkb pkc pki pko pkp pkr pks poa pob poc poh poi pok poo pop por pos ppa ppb ppc pph ppi ppk ppo ppp ppr pps pra prb prc prh pri prk pro prp prr prs ps- psa psb psc psh psi psk pso psp psr pss ra- raa rab rac rah rai rak rao rap rar ras rba rbb rbc rbh rbi rbk rbo rbp rbr rbs rca rcb rcc rch rci rco rcp rcr rcs rh- rha rhb rhc rhh rhi rho rhp rhr rhs ria rib ric rih rii rik rio rip rir ris rkb rkc rkk rko rkp rks roa rob roc roh roi rok roo rop ror ros rpa rpb rpc rph rpi rpk rpo rpp rpr rps rra rrb rrc rrh rri rrk rrp rrr rrs rsa rsb rsc rsh rsi rsk rso rsp rsr rss saa sab sac sah sai sak sao sap sar sas sba sbb sbc sbh sbi sbk sbo sbp sbr sbs sca scb scc sch sci sck sco scp scr scs sh- sha shb shc shh shi shk sho shp shr shs sia sib sic sih sii sik sio sip sir sis sk- ska skb skc skh ski skk sko skp skr sks soa sob soc soh soi sok soo sop sor sos spa spb spc sph spi spk spo spp spr sps sr- sra srb src srh sri srk sro srp srr srs ss- ssa ssb ssc ssh ssi ssk sso ssp ssr sss