-ic a-a a-b a-c a-i aaa aab aac aai aam aan aao aar aas ab- aba abb abc abi abm abn abo abr abs ac- aca acb acc aci acm acn aco acr acs ai- aia aib aic aii aim ain aio air ais ama amb amc ami amm amn amo amr ams an- ana anb anc ani anm ann ano anr ans aoa aob aoc aoi aom aon aoo aor aos ar- ara arb arc ari arm arn aro arr ars as- asa asb asc asi asm asn aso asr ass baa bab bac bai bam ban bao bar bas bba bbb bbc bbi bbm bbn bbo bbr bbs bca bcb bcc bci bcm bcn bco bcr bcs bi- bia bib bic bii bim bin bio bir bis bma bmb bmc bmi bmm bmn bmo bmr bms bna bnb bnc bni bnn bno bnr bns boa bob boc boi bom bon boo bor bos bra brb bri brm brn bro brr brs bsa bsb bsc bsi bsm bsn bso bsr bss c-- caa cab cac cai cam can cao car cas cba cbb cbc cbi cbm cbn cbo cbr cbs cca ccb ccc cci ccm ccn cco ccr ccs ci- cia cib cic cii cim cin cio cir cis cma cmb cmc cmi cmm cmn cmo cmr cms cn- cna cnb cnc cni cnm cnn cno cnr cns co- coa cob coc coi com con coo cor cos cra crb crc cri crm crn cro crr crs csa csb csc csi csm csn cso csr css ia- iaa iab iac iai iam ian iao iar ias iba ibb ibc ibi ibm ibn ibo ibr ibs ica icb icc ici icm icn ico icr ics iia iib iic iii iim iin iio iir iis im- ima imb imc imi imm imn imo ims in- ina inb inc ini inm inn ino inr ins io- ioa iob ioc ioi iom ion ioo ior ios ir- ira irb irc iri irm irn iro irr irs is- isa isb isc isi ism isn iso isr iss m-o m-r maa mab mac mai mam man mao mar mas mba mbb mbc mbi mbm mbo mbr mbs mc- mca mcb mcc mci mcm mcn mco mcr mcs mi- mia mib mic mii mim min mio mir mis mma mmb mmc mmi mmm mmn mmo mmr mms mna mnb mnc mni mnm mnn mno mnr mns moa mob moc moi mom mon moo mor mos mra mrb mrc mri mrm mrn mro mrr mrs msa msb msc msi msm msn mso msr mss n-i naa nab nac nai nam nan nao nar nas nba nbb nbc nbi nbm nbn nbo nbr nbs nca ncb ncc nci ncm ncn nco ncr ncs nia nib nic nii nim nin nio nir nis nma nmb nmc nmi nmm nmn nmo nmr nms nna nnb nnc nni nnm nnn nno nns no- noa nob noc noi nom non noo nor nos nra nrb nrc nri nrm nrn nro nrr nrs nsa nsb nsc nsi nsm nsn nso nsr nss o-i oaa oab oac oai oam oan oao oar oas ob- oba obb obc obi obm obn obo obr obs oc- oca ocb occ oci ocm ocn oco ocr ocs oia oib oic oii oim oin oio oir ois om- oma omb omc omi omm omn omo omr oms on- ona onb onc oni onn ono onr ons oo- ooa oob ooc ooi oom oon ooo oor oos or- ora orb orc ori orm orn oro orr ors os- osa osb osc osi osm osn oso osr oss ra- raa rab rac rai ram ran rao rar ras rba rbb rbc rbi rbm rbn rbo rbr rbs rca rcb rcc rci rcm rcn rco rcr rcs ria rib ric rii rim rin rio rir ris rma rmb rmc rmi rmm rmn rmo rmr rms rna rnb rnc rni rnm rnn rno rnr rns roa rob roc roi rom ron roo ror ros rra rrb rrc rri rrm rrn rrr rrs rsa rsb rsc rsi rsm rsn rso rsr rss saa sab sac sai sam san sao sar sas sba sbb sbc sbi sbm sbn sbo sbr sbs sca scb scc sci scm scn sco scr scs sia sib sic sii sim sin sio sir sis sma smb smc smi smm smn smo smr sms sna snb snc sni snm snn sno snr sns soa sob soc soi som son soo sor sos sr- sra srb src sri srm srn sro srr srs ss- ssa ssb ssc ssi ssm ssn sso ssr sss