-ic a-a a-b a-c a-i a-q aaa aab aac aai aaq aas ab- aba abb abc abi abq abs ac- aca acb acc aci acq acs ai- aia aib aic aii aiq ais aqa aqc aqi aqs as- asa asb asc asi asq ass baa bab bac bai baq bas bba bbb bbc bbi bbq bbs bca bcb bcc bci bcq bcs bi- bia bib bic bii bis bqc bsa bsb bsc bsi bss c-- caa cab cac cai caq cas cba cbb cbc cbi cbq cbs cca ccb ccc cci ccs ci- cia cib cic cii ciq cis cqa cqb cqc cqi cqs csa csb csc csi csq css ia- iaa iab iac iai iaq ias iba ibb ibc ibi ibs ica icb icc ici icq ics iia iib iic iii iis iqa iqc iqs is- isa isb isc isi isq iss qaa qac qas qba qbc qbq qbs qca qcc qci qcs qic qis qqq qsa qsc qsi saa sab sac sai saq sas sba sbb sbc sbi sbq sbs sca scb scc sci scs sia sib sic sii siq sis sqa sqi sqq sqs ss- ssa ssb ssc ssi ssq sss