-ic a-a a-b a-c a-i aaa aab aac aah aai aam aao aar aas ab- aba abb abc abh abi abm abo abr abs ac- aca acb acc ach aci acm aco acr acs aha ahb ahc ahh ahi ahm aho ahr ahs ai- aia aib aic aih aii aim aio air ais ama amb amc amh ami amm amo amr ams aoa aob aoc aoh aoi aom aoo aor aos ar- ara arb arc arh ari arm aro arr ars as- asa asb asc ash asi asm aso asr ass baa bab bac bah bai bam bao bar bas bba bbb bbc bbh bbi bbm bbo bbr bbs bca bcb bcc bch bci bcm bco bcr bcs bha bhb bhc bhh bhi bhm bho bhr bhs bi- bia bib bic bih bii bim bio bir bis bma bmb bmc bmh bmi bmm bmo bmr bms boa bob boc boh boi bom boo bor bos bra brb brh bri brm bro brr brs bsa bsb bsc bsh bsi bsm bso bsr bss c-- caa cab cac cah cai cam cao car cas cba cbb cbc cbh cbi cbm cbo cbr cbs cca ccb ccc cch cci ccm cco ccr ccs ch- cha chb chc chh chi chm cho chr chs ci- cia cib cic cih cii cim cio cir cis cma cmb cmc cmh cmi cmm cmo cmr cms co- coa cob coc coh coi com coo cor cos cra crb crc crh cri crm cro crr crs csa csb csc csh csi csm cso csr css h-i haa hab hac hah hai ham hao har has hba hbb hbc hbh hbi hbm hbo hbr hbs hca hcb hcc hch hci hcm hco hcr hcs hha hhb hhc hhh hhi hhm hho hhr hhs hia hib hic hih hii him hio hir his hma hmb hmc hmh hmi hmm hmo hmr hms hoa hob hoc hoh hoi hom hoo hor hos hr- hra hrb hrc hrh hri hrm hro hrr hrs hsa hsb hsc hsh hsi hsm hsr hss ia- iaa iab iac iah iai iam iao iar ias iba ibb ibc ibh ibi ibm ibo ibr ibs ica icb icc ich ici icm ico icr ics iha ihb ihc ihh ihi ihm iho ihr ihs iia iib iic iih iii iim iio iir iis im- ima imb imc imh imi imm imo ims io- ioa iob ioc ioh ioi iom ioo ior ios ir- ira irb irc iri irm iro irr irs is- isa isb isc ish isi ism iso isr iss m-o m-r maa mab mac mah mai mam mao mar mas mba mbb mbc mbh mbi mbm mbo mbr mbs mc- mca mcb mcc mch mci mcm mco mcr mcs mha mhc mhh mhi mhm mho mhr mhs mi- mia mib mic mih mii mim mio mir mis mma mmb mmc mmh mmi mmm mmo mmr mms moa mob moc moh moi mom moo mor mos mra mrb mrc mrh mri mrm mro mrr mrs msa msb msc msh msi msm mso msr mss o-i oaa oab oac oah oai oam oao oar oas ob- oba obb obc obh obi obm obo obr obs oc- oca ocb occ och oci ocm oco ocr ocs oha ohc ohh ohi ohm oho ohr ohs oia oib oic oii oim oio oir ois om- oma omb omc omh omi omm omo omr oms oo- ooa oob ooc ooh ooi oom ooo oor oos or- ora orb orc orh ori orm oro orr ors os- osa osb osc osh osi osm oso osr oss ra- raa rab rac rah rai ram rao rar ras rba rbb rbc rbh rbi rbm rbo rbr rbs rca rcb rcc rch rci rcm rco rcr rcs rh- rha rhb rhc rhh rhi rhm rho rhr rhs ria rib ric rih rii rim rio rir ris rma rmb rmc rmh rmi rmm rmo rmr rms roa rob roc roh roi rom roo ror ros rra rrb rrc rrh rri rrm rrr rrs rsa rsb rsc rsh rsi rsm rso rsr rss saa sab sac sah sai sam sao sar sas sba sbb sbc sbh sbi sbm sbo sbr sbs sca scb scc sch sci scm sco scr scs sh- sha shb shc shh shi shm sho shr shs sia sib sic sih sii sim sio sir sis sma smb smc smh smi smm smo smr sms soa sob soc soh soi som soo sor sos sr- sra srb src srh sri srm sro srr srs ss- ssa ssb ssc ssh ssi ssm sso ssr sss