-ic a-a a-b a-c a-i aaa aab aac aad aah aai aas ab- aba abb abc abd abh abi abs ac- aca acb acc acd ach aci acs ad- ada adb adc add adh adi ads aha ahb ahc ahd ahh ahi ahs ai- aia aib aic aid aih aii ais as- asa asb asc asd ash asi ass baa bab bac bad bah bai bas bba bbb bbc bbd bbh bbi bbs bca bcb bcc bcd bch bci bcs bda bdb bdc bdd bdh bdi bds bha bhb bhc bhd bhh bhi bhs bi- bia bib bic bid bih bii bis bsa bsb bsc bsd bsh bsi bss c-- caa cab cac cad cah cai cas cba cbb cbc cbd cbh cbi cbs cca ccb ccc ccd cch cci ccs cda cdb cdc cdd cdh cdi cds ch- cha chb chc chd chh chi chs ci- cia cib cic cid cih cii cis csa csb csc csd csh csi css daa dab dac dad dah dai das dba dbb dbc dbd dbh dbi dbs dca dcb dcc dcd dci dcs dda ddb ddc ddd ddh ddi dds dh- dha dhb dhc dhd dhh dhi dhs di- dia dib dic did dih dii dis dsa dsb dsc dsd dsh dsi dss h-i haa hab hac had hah hai has hba hbb hbc hbd hbh hbi hbs hca hcb hcc hcd hch hci hcs hda hdb hdc hdd hdh hdi hds hha hhb hhc hhd hhh hhi hhs hia hib hic hid hih hii his hsa hsb hsc hsd hsh hsi hss i-d ia- iaa iab iac iad iah iai ias iba ibb ibc ibd ibh ibi ibs ica icb icc icd ich ici ics ida idb idc idd idh idi ids iha ihb ihc ihd ihh ihi ihs iia iib iic iid iih iii iis is- isa isb isc isd ish isi iss saa sab sac sad sah sai sas sba sbb sbc sbd sbh sbi sbs sca scb scc scd sch sci scs sda sdb sdc sdd sdh sdi sds sh- sha shb shc shd shh shi shs sia sib sic sid sih sii sis ss- ssa ssb ssc ssd ssh ssi sss