-al -ic a-a a-b a-c a-i aaa aab aac aai aak aal aar aas ab- aba abb abc abi abk abl abr abs ac- aca acb acc aci ack acl acr acs ai- aia aib aic aii aik ail air ais aka akb akc aki akk akl akr aks al- ala alb alc ali alk all alr als ar- ara arb arc ari ark arl arr ars as- asa asb asc asi ask asl asr ass baa bab bac bai bak bal bar bas bba bbb bbc bbi bbk bbl bbr bbs bca bcb bcc bci bck bcl bcr bcs bi- bia bib bic bii bik bil bir bis bka bkb bkc bkk bkl bkr bks bla blb blc bli blk bll blr bls bra brb bri brk brl brr brs bsa bsb bsc bsi bsk bsl bsr bss c-- caa cab cac cai cak cal car cas cba cbb cbc cbi cbk cbl cbr cbs cca ccb ccc cci cck ccl ccr ccs ci- cia cib cic cii cik cil cir cis cka ckb ckc cki cks cl- cla clb clc cli clk cll clr cls cra crb crc cri crk crl crr crs csa csb csc csi csk csl csr css ia- iaa iab iac iai ial iar ias iba ibb ibc ibi ibk ibl ibr ibs ica icb icc ici ick icl icr ics iia iib iic iii iil iir iis ika ikb ikc iki ikk ikl ikr iks il- ila ilb ilc ili ilk ill ilr ils ir- ira irb irc iri irk irl irr irs is- isa isb isc isi isk isl isr iss ka- kaa kab kac kai kak kal kar kas kba kbb kbc kbi kbk kbl kbr kbs kca kcb kcc kci kck kcl kcr kcs kia kib kic kii kik kil kir kis kkb kkc kki kkk kkl kkr kks kl- kla klb klc kli klr kls kra krc kri krk krl krr krs ksa ksb ksc ksi ksk ksl ksr kss la- laa lab lac lai lak lal lar las lba lbb lbc lbi lbk lbl lbr lbs lca lcb lcc lci lck lcl lcr lcs lia lib lic lii lik lil lir lis lka lkb lkl lkr lks lla llb llc lli llk lll llr lls lra lrb lrc lri lrk lrr lrs lsa lsb lsc lsi lsk lsl lsr lss ra- raa rab rac rai rak ral rar ras rba rbb rbc rbi rbk rbl rbr rbs rca rcb rcc rci rcl rcr rcs ria rib ric rii rik ril rir ris rkb rkc rkk rks rla rlc rli rll rlr rls rra rrb rrc rri rrk rrl rrr rrs rsa rsb rsc rsi rsk rsl rsr rss saa sab sac sai sak sal sar sas sba sbb sbc sbi sbk sbl sbr sbs sca scb scc sci sck scl scr scs sia sib sic sii sik sil sir sis sk- ska skb skc ski skk skl skr sks sla slb slc sli slk sll slr sls sr- sra srb src sri srk srl srr srs ss- ssa ssb ssc ssi ssk ssl ssr sss