-ic a-a a-b a-c a-i aaa aab aac aai aam aao aap aar aas ab- aba abb abc abi abm abo abp abr abs ac- aca acb acc aci acm aco acp acr acs ai- aia aib aic aii aim aio aip air ais ama amb amc ami amm amo amp amr ams aoa aob aoc aoi aom aoo aop aor aos ap- apa apb apc api apm apo app apr aps ar- ara arb arc ari arm aro arp arr ars as- asa asb asc asi asm aso asp asr ass b-p baa bab bac bai bam bao bap bar bas bba bbb bbc bbi bbm bbo bbp bbr bbs bca bcb bcc bci bcm bco bcp bcr bcs bi- bia bib bic bii bim bio bip bir bis bma bmb bmc bmi bmm bmo bmp bmr bms boa bob boc boi bom boo bop bor bos bpa bpb bpc bpi bpm bpo bpp bpr bps bra brb bri brm bro brp brr brs bsa bsb bsc bsi bsm bso bsp bsr bss c-- caa cab cac cai cam cao cap car cas cba cbb cbc cbi cbm cbo cbp cbr cbs cca ccb ccc cci ccm cco ccp ccr ccs ci- cia cib cic cii cim cio cip cir cis cma cmb cmc cmi cmm cmo cmp cmr cms co- coa cob coc coi com coo cop cor cos cpa cpb cpc cpi cpm cpo cpp cpr cps cra crb crc cri crm cro crp crr crs csa csb csc csi csm cso csp csr css ia- iaa iab iac iai iam iao iap iar ias iba ibb ibc ibi ibm ibo ibp ibr ibs ica icb icc ici icm ico icp icr ics iia iib iic iii iim iio iip iir iis im- ima imb imc imi imm imo imp ims io- ioa iob ioc ioi iom ioo iop ior ios ipa ipb ipc ipi ipm ipo ipp ipr ips ir- ira irb irc iri irm iro irp irr irs is- isa isb isc isi ism iso isp isr iss m-o m-r maa mab mac mai mam mao map mar mas mba mbb mbc mbi mbm mbo mbp mbr mbs mc- mca mcb mcc mci mcm mco mcp mcr mcs mi- mia mib mic mii mim mio mip mir mis mma mmb mmc mmi mmm mmo mmp mmr mms moa mob moc moi mom moo mop mor mos mpa mpb mpc mpi mpm mpo mpp mpr mps mra mrb mrc mri mrm mro mrp mrr mrs msa msb msc msi msm mso msp msr mss o-i oaa oab oac oai oam oao oap oar oas ob- oba obb obc obi obm obo obp obr obs oc- oca ocb occ oci ocm oco ocp ocr ocs oia oib oic oii oim oio oip oir ois om- oma omb omc omi omm omo omp omr oms oo- ooa oob ooc ooi oom ooo oop oor oos op- opa opb opc opi opm opo opp opr ops or- ora orb orc ori orm oro orp orr ors os- osa osb osc osi osm oso osp osr oss p-p paa pab pac pai pam pao pap par pas pba pbb pbc pbi pbm pbo pbp pbr pbs pca pcb pcc pci pcm pco pcp pcr pcs pia pib pic pii pim pio pip pir pis pma pmb pmc pmi pmm pmo pmp pmr pms poa pob poc poi pom poo pop por pos ppa ppb ppc ppi ppm ppo ppp ppr pps pra prb prc pri prm pro prp prr prs ps- psa psb psc psi psm pso psp psr pss ra- raa rab rac rai ram rao rap rar ras rba rbb rbc rbi rbm rbo rbp rbr rbs rca rcb rcc rci rcm rco rcp rcr rcs ria rib ric rii rim rio rip rir ris rma rmb rmc rmi rmm rmo rmp rmr rms roa rob roc roi rom roo rop ror ros rpa rpb rpc rpi rpm rpo rpp rpr rps rra rrb rrc rri rrm rrp rrr rrs rsa rsb rsc rsi rsm rso rsp rsr rss saa sab sac sai sam sao sap sar sas sba sbb sbc sbi sbm sbo sbp sbr sbs sca scb scc sci scm sco scp scr scs sia sib sic sii sim sio sip sir sis sma smb smc smi smm smo smp smr sms soa sob soc soi som soo sop sor sos spa spb spc spi spm spo spp spr sps sr- sra srb src sri srm sro srp srr srs ss- ssa ssb ssc ssi ssm sso ssp ssr sss