-ic a-a a-b a-c a-i aaa aab aac aah aai aan aas ab- aba abb abc abh abi abn abs ac- aca acb acc ach aci acn acs aha ahb ahc ahh ahi ahn ahs ai- aia aib aic aih aii ain ais an- ana anb anc anh ani ann ans as- asa asb asc ash asi asn ass baa bab bac bah bai ban bas bba bbb bbc bbh bbi bbn bbs bca bcb bcc bch bci bcn bcs bha bhb bhc bhh bhi bhs bi- bia bib bic bih bii bin bis bna bnb bnc bni bnn bns bsa bsb bsc bsh bsi bsn bss c-- caa cab cac cah cai can cas cba cbb cbc cbh cbi cbn cbs cca ccb ccc cch cci ccn ccs ch- cha chb chc chh chi chn chs ci- cia cib cic cih cii cin cis cn- cna cnb cnc cnh cni cnn cns csa csb csc csh csi csn css h-i haa hab hac hah hai han has hba hbb hbc hbh hbi hbn hbs hca hcb hcc hch hci hcn hcs hha hhb hhc hhh hhi hhn hhs hia hib hic hih hii hin his hna hnb hnc hnh hnn hns hsa hsb hsc hsh hsi hsn hss ia- iaa iab iac iah iai ian ias iba ibb ibc ibh ibi ibn ibs ica icb icc ich ici icn ics iha ihb ihc ihh ihi ihn ihs iia iib iic iih iii iin iis in- ina inb inc inh ini inn ins is- isa isb isc ish isi isn iss n-i naa nab nac nah nai nan nas nba nbb nbc nbi nbn nbs nca ncb ncc nch nci ncn ncs nha nhb nhc nhh nhi nhn nhs nia nib nic nih nii nin nis nna nnb nnc nnh nni nnn nns nsa nsb nsc nsh nsi nsn nss saa sab sac sah sai san sas sba sbb sbc sbh sbi sbn sbs sca scb scc sch sci scn scs sh- sha shb shc shh shi shn shs sia sib sic sih sii sin sis sna snb snc sni snn sns ss- ssa ssb ssc ssh ssi ssn sss