-ic a-a a-b a-c a-i aaa aab aac aai aam aap aas ab- aba abb abc abi abm abp abs ac- aca acb acc aci acm acp acs ai- aia aib aic aii aim aip ais ama amb amc ami amm amp ams ap- apa apb apc api apm app aps as- asa asb asc asi asm asp ass b-p baa bab bac bai bam bap bas bba bbb bbc bbi bbm bbp bbs bca bcb bcc bci bcm bcp bcs bi- bia bib bic bii bim bip bis bma bmb bmc bmi bmm bmp bms bpa bpb bpc bpi bpm bpp bps bsa bsb bsc bsi bsm bsp bss c-- caa cab cac cai cam cap cas cba cbb cbc cbi cbm cbp cbs cca ccb ccc cci ccm ccp ccs ci- cia cib cic cii cim cip cis cma cmb cmc cmi cmm cmp cms cpa cpb cpc cpi cpm cpp cps csa csb csc csi csm csp css ia- iaa iab iac iai iam iap ias iba ibb ibc ibi ibm ibp ibs ica icb icc ici icm icp ics iia iib iic iii iim iip iis im- ima imb imc imi imm imp ims ipa ipb ipc ipi ipm ipp ips is- isa isb isc isi ism isp iss maa mab mac mai mam map mas mba mbb mbc mbi mbm mbp mbs mc- mca mcb mcc mci mcm mcp mcs mi- mia mib mic mii mim mip mis mma mmb mmc mmi mmm mmp mms mpa mpb mpc mpi mpm mpp mps msa msb msc msi msm msp mss p-p paa pab pac pai pam pap pas pba pbb pbc pbi pbm pbp pbs pca pcb pcc pci pcm pcp pcs pia pib pic pii pim pip pis pma pmb pmc pmi pmm pmp pms ppa ppb ppc ppi ppm ppp pps ps- psa psb psc psi psm psp pss saa sab sac sai sam sap sas sba sbb sbc sbi sbm sbp sbs sca scb scc sci scm scp scs sia sib sic sii sim sip sis sma smb smc smi smm smp sms spa spb spc spi spm spp sps ss- ssa ssb ssc ssi ssm ssp sss