-al -ic a-a a-b a-c a-i aaa aab aac aai aal aan aar aas ab- aba abb abc abi abl abn abr abs ac- aca acb acc aci acl acn acr acs ai- aia aib aic aii ail ain air ais al- ala alb alc ali all aln alr als an- ana anb anc ani anl ann anr ans ar- ara arb arc ari arl arn arr ars as- asa asb asc asi asl asn asr ass baa bab bac bai bal ban bar bas bba bbb bbc bbi bbl bbn bbr bbs bca bcb bcc bci bcl bcn bcr bcs bi- bia bib bic bii bil bin bir bis bla blb blc bli bll bln blr bls bna bnb bnc bni bnl bnn bnr bns bra brb bri brl brn brr brs bsa bsb bsc bsi bsl bsn bsr bss c-- caa cab cac cai cal can car cas cba cbb cbc cbi cbl cbn cbr cbs cca ccb ccc cci ccl ccn ccr ccs ci- cia cib cic cii cil cin cir cis cl- cla clb clc cli cll cln clr cls cn- cna cnb cnc cni cnl cnn cnr cns cra crb crc cri crl crn crr crs csa csb csc csi csl csn csr css ia- iaa iab iac iai ial ian iar ias iba ibb ibc ibi ibl ibn ibr ibs ica icb icc ici icl icn icr ics iia iib iic iii iil iin iir iis il- ila ilb ilc ili ill iln ilr ils in- ina inb inc ini inl inn inr ins ir- ira irb irc iri irl irn irr irs is- isa isb isc isi isl isn isr iss la- laa lab lac lai lal lan lar las lba lbb lbc lbi lbl lbr lbs lca lcb lcc lci lcl lcn lcr lcs lia lib lic lii lil lin lir lis lla llb llc lli lll lln llr lls lna lnb lnc lni lnl lnn lnr lns lra lrb lrc lri lrn lrr lrs lsa lsb lsc lsi lsl lsn lsr lss n-i naa nab nac nai nal nan nar nas nba nbb nbc nbi nbl nbn nbr nbs nca ncb ncc nci ncl ncn ncr ncs nia nib nic nii nil nin nir nis nla nlb nlc nli nll nln nlr nls nna nnb nnc nni nnl nnn nns nra nrb nrc nri nrl nrn nrr nrs nsa nsb nsc nsi nsl nsn nsr nss ra- raa rab rac rai ral ran rar ras rba rbb rbc rbi rbl rbn rbr rbs rca rcb rcc rci rcl rcn rcr rcs ria rib ric rii ril rin rir ris rla rlc rli rll rln rlr rls rna rnb rnc rni rnn rnr rns rra rrb rrc rri rrl rrn rrr rrs rsa rsb rsc rsi rsl rsn rsr rss saa sab sac sai sal san sar sas sba sbb sbc sbi sbl sbn sbr sbs sca scb scc sci scl scn scr scs sia sib sic sii sil sin sir sis sla slb slc sli sll sln slr sls sna snb snc sni snl snn snr sns sr- sra srb src sri srl srn srr srs ss- ssa ssb ssc ssi ssl ssn ssr sss