-al -ic a-a a-b a-c a-i aaa aab aac aai aak aal aan aar ab- aba abb abc abi abk abl abn abr ac- aca acb acc aci ack acl acn acr ai- aia aib aic aii aik ail ain air aka akb akc aki akk akl akn akr al- ala alb alc ali alk all aln alr an- ana anb anc ani ank anl ann anr ar- ara arb arc ari ark arl arn arr baa bab bac bai bak bal ban bar bba bbb bbc bbi bbk bbl bbn bbr bca bcb bcc bci bck bcl bcn bcr bi- bia bib bic bii bik bil bin bir bka bkb bkc bkk bkl bkn bkr bla blb blc bli blk bll bln blr bna bnb bnc bni bnk bnl bnn bnr bra brb bri brk brl brn brr c-- caa cab cac cai cak cal can car cba cbb cbc cbi cbk cbl cbn cbr cca ccb ccc cci cck ccl ccn ccr ci- cia cib cic cii cik cil cin cir cka ckb ckc cki cl- cla clb clc cli clk cll cln clr cn- cna cnb cnc cni cnl cnn cnr cra crb crc cri crk crl crn crr ia- iaa iab iac iai ial ian iar iba ibb ibc ibi ibk ibl ibn ibr ica icb icc ici ick icl icn icr iia iib iic iii iil iin iir ika ikb ikc iki ikk ikl ikr il- ila ilb ilc ili ilk ill iln ilr in- ina inb inc ini ink inl inn inr ir- ira irb irc iri irk irl irn irr ka- kaa kab kac kai kak kal kan kar kba kbb kbc kbi kbk kbl kbn kbr kca kcb kcc kci kck kcl kcn kcr kia kib kic kii kik kil kin kir kkb kkc kki kkk kkl kkn kkr kl- kla klb klc kli klr kn- kna knc kni knk knl knn knr kra krc kri krk krl krn krr la- laa lab lac lai lak lal lan lar lba lbb lbc lbi lbk lbl lbr lca lcb lcc lci lck lcl lcn lcr lia lib lic lii lik lil lin lir lka lkb lkl lkr lla llb llc lli llk lll lln llr lna lnb lnc lni lnk lnl lnn lnr lra lrb lrc lri lrk lrn lrr n-i naa nab nac nai nak nal nan nar nba nbb nbc nbi nbk nbl nbn nbr nca ncb ncc nci nck ncl ncn ncr nia nib nic nii nik nil nin nir nka nkc nki nkk nkn nkr nla nlb nlc nli nlk nll nln nlr nna nnb nnc nni nnk nnl nnn nra nrb nrc nri nrk nrl nrn nrr ra- raa rab rac rai rak ral ran rar rba rbb rbc rbi rbk rbl rbn rbr rca rcb rcc rci rcl rcn rcr ria rib ric rii rik ril rin rir rkb rkc rkk rla rlc rli rll rln rlr rna rnb rnc rni rnn rnr rra rrb rrc rri rrk rrl rrn rrr