-ic a-a a-b a-c a-i aaa aab aac aai aam aan aas ab- aba abb abc abi abm abn abs ac- aca acb acc aci acm acn acs ai- aia aib aic aii aim ain ais ama amb amc ami amm amn ams an- ana anb anc ani anm ann ans as- asa asb asc asi asm asn ass baa bab bac bai bam ban bas bba bbb bbc bbi bbm bbn bbs bca bcb bcc bci bcm bcn bcs bi- bia bib bic bii bim bin bis bma bmb bmc bmi bmm bmn bms bna bnb bnc bni bnn bns bsa bsb bsc bsi bsm bsn bss c-- caa cab cac cai cam can cas cba cbb cbc cbi cbm cbn cbs cca ccb ccc cci ccm ccn ccs ci- cia cib cic cii cim cin cis cma cmb cmc cmi cmm cmn cms cn- cna cnb cnc cni cnm cnn cns csa csb csc csi csm csn css ia- iaa iab iac iai iam ian ias iba ibb ibc ibi ibm ibn ibs ica icb icc ici icm icn ics iia iib iic iii iim iin iis im- ima imb imc imi imm imn ims in- ina inb inc ini inm inn ins is- isa isb isc isi ism isn iss maa mab mac mai mam man mas mba mbb mbc mbi mbm mbs mc- mca mcb mcc mci mcm mcn mcs mi- mia mib mic mii mim min mis mma mmb mmc mmi mmm mmn mms mna mnb mnc mni mnm mnn mns msa msb msc msi msm msn mss n-i naa nab nac nai nam nan nas nba nbb nbc nbi nbm nbn nbs nca ncb ncc nci ncm ncn ncs nia nib nic nii nim nin nis nma nmb nmc nmi nmm nmn nms nna nnb nnc nni nnm nnn nns nsa nsb nsc nsi nsm nsn nss saa sab sac sai sam san sas sba sbb sbc sbi sbm sbn sbs sca scb scc sci scm scn scs sia sib sic sii sim sin sis sma smb smc smi smm smn sms sna snb snc sni snm snn sns ss- ssa ssb ssc ssi ssm ssn sss