-ic a-a a-b a-c a-i aaa aab aac aah aai aam aao aas ab- aba abb abc abh abi abm abo abs ac- aca acb acc ach aci acm aco acs aha ahb ahc ahh ahi ahm aho ahs ai- aia aib aic aih aii aim aio ais ama amb amc amh ami amm amo ams aoa aob aoc aoh aoi aom aoo aos as- asa asb asc ash asi asm aso ass baa bab bac bah bai bam bao bas bba bbb bbc bbh bbi bbm bbo bbs bca bcb bcc bch bci bcm bco bcs bha bhb bhc bhh bhi bhm bho bhs bi- bia bib bic bih bii bim bio bis bma bmb bmc bmh bmi bmm bmo bms boa bob boc boh boi bom boo bos bsa bsb bsc bsh bsi bsm bso bss c-- caa cab cac cah cai cam cao cas cba cbb cbc cbh cbi cbm cbo cbs cca ccb ccc cch cci ccm cco ccs ch- cha chb chc chh chi chm cho chs ci- cia cib cic cih cii cim cio cis cma cmb cmc cmh cmi cmm cmo cms co- coa cob coc coh coi com coo cos csa csb csc csh csi csm cso css h-i haa hab hac hah hai ham hao has hba hbb hbc hbh hbi hbm hbo hbs hca hcb hcc hch hci hcm hco hcs hha hhb hhc hhh hhi hhm hho hhs hia hib hic hih hii him hio his hma hmb hmc hmh hmi hmm hmo hms hoa hob hoc hoh hoi hom hoo hos hsa hsb hsc hsh hsi hsm hss ia- iaa iab iac iah iai iam iao ias iba ibb ibc ibh ibi ibm ibo ibs ica icb icc ich ici icm ico ics iha ihb ihc ihh ihi ihm iho ihs iia iib iic iih iii iim iio iis im- ima imb imc imh imi imm imo ims io- ioa iob ioc ioh ioi iom ioo ios is- isa isb isc ish isi ism iso iss m-o maa mab mac mah mai mam mao mas mba mbb mbc mbh mbi mbm mbo mbs mc- mca mcb mcc mch mci mcm mco mcs mha mhc mhh mhi mhm mho mhs mi- mia mib mic mih mii mim mio mis mma mmb mmc mmh mmi mmm mmo mms moa mob moc moh moi mom moo mos msa msb msc msh msi msm mso mss o-i oaa oab oac oah oai oam oao oas ob- oba obb obc obh obi obm obo obs oc- oca ocb occ och oci ocm oco ocs oha ohc ohh ohi ohm oho ohs oia oib oic oii oim oio ois om- oma omb omc omh omi omm omo oms oo- ooa oob ooc ooh ooi oom ooo oos os- osa osb osc osh osi osm oso oss saa sab sac sah sai sam sao sas sba sbb sbc sbh sbi sbm sbo sbs sca scb scc sch sci scm sco scs sh- sha shb shc shh shi shm sho shs sia sib sic sih sii sim sio sis sma smb smc smh smi smm smo sms soa sob soc soh soi som soo sos ss- ssa ssb ssc ssh ssi ssm sso sss