-ic a-a a-b a-c a-i aaa aab aac aai aam aar aas aax ab- aba abb abc abi abm abr abs abx ac- aca acb acc aci acm acr acs acx ai- aia aib aic aii aim air ais aix ama amb amc ami amm amr ams amx ar- ara arb arc ari arm arr ars arx as- asa asb asc asi asm asr ass asx ax- axa axi axm axr axs axx baa bab bac bai bam bar bas bax bba bbb bbc bbi bbm bbr bbs bbx bca bcb bcc bci bcm bcr bcs bcx bi- bia bib bic bii bim bir bis bix bma bmb bmc bmi bmm bmr bms bmx bra brb bri brm brr brs brx bsa bsb bsc bsi bsm bsr bss bsx bxb bxi bxm bxx c-- caa cab cac cai cam car cas cax cba cbb cbc cbi cbm cbr cbs cbx cca ccb ccc cci ccm ccr ccs ccx ci- cia cib cic cii cim cir cis cix cma cmb cmc cmi cmm cmr cms cmx cra crb crc cri crm crr crs crx csa csb csc csi csm csr css csx cxc cxi cxr cxs cxx ia- iaa iab iac iai iam iar ias iba ibb ibc ibi ibm ibr ibs ibx ica icb icc ici icm icr ics iia iib iic iii iim iir iis iix im- ima imb imc imi imm ims imx ir- ira irb irc iri irm irr irs irx is- isa isb isc isi ism isr iss ixc ixi m-r maa mab mac mai mam mar mas max mba mbb mbc mbi mbm mbr mbs mbx mc- mca mcb mcc mci mcm mcr mcs mcx mi- mia mib mic mii mim mir mis mix mma mmb mmc mmi mmm mmr mms mmx mra mrb mrc mri mrm mrr mrs mrx msa msb msc msi msm msr mss msx mxa mxc mxi mxr mxs ra- raa rab rac rai ram rar ras rax rba rbb rbc rbi rbm rbr rbs rbx rca rcb rcc rci rcm rcr rcs rcx ria rib ric rii rim rir ris rix rma rmb rmc rmi rmm rmr rms rmx rra rrb rrc rri rrm rrr rrs rsa rsb rsc rsi rsm rsr rss rsx rxr rxs saa sab sac sai sam sar sas sax sba sbb sbc sbi sbm sbr sbs sbx sca scb scc sci scm scr scs scx sia sib sic sii sim sir sis six sma smb smc smi smm smr sms smx sr- sra srb src sri srm srr srs srx ss- ssa ssb ssc ssi ssm ssr sss ssx sxc sxi sxm sxs xaa xac xam xar xas xbc xbr xbx xcb xci xcr xcx xia xic xii xis xix xma xmc xmi xmm xmr xms xmx xrc xrx xsa xsb xsc xsi xsm xss xxi xxx