-al -ic a-a a-b a-c a-i a-t aaa aab aac aai aal aan aar aat ab- aba abb abc abi abl abn abr abt ac- aca acb acc aci acl acn acr act ai- aia aib aic aii ail ain air ait al- ala alb alc ali all aln alr alt an- ana anb anc ani anl ann anr ant ar- ara arb arc ari arl arn arr art at- ata atb atc ati atl atn atr att baa bab bac bai bal ban bar bat bba bbb bbc bbi bbl bbn bbr bbt bca bcb bcc bci bcl bcn bcr bct bi- bia bib bic bii bil bin bir bit bla blb blc bli bll bln blr blt bna bnb bnc bni bnl bnn bnr bnt bra brb bri brl brn brr brt bta btb btc bti btl btn btr btt c-- caa cab cac cai cal can car cat cba cbb cbc cbi cbl cbn cbr cbt cca ccb ccc cci ccl ccn ccr cct ci- cia cib cic cii cil cin cir cit cl- cla clb clc cli cll cln clr clt cn- cna cnb cnc cni cnl cnn cnr cnt cra crb crc cri crl crn crr crt cta ctb ctc cti ctl ctn ctr ctt ia- iaa iab iac iai ial ian iar iat iba ibb ibc ibi ibl ibn ibr ibt ica icb icc ici icl icn icr ict iia iib iic iii iil iin iir iit il- ila ilb ilc ili ill iln ilr ilt in- ina inb inc ini inl inn inr int ir- ira irb irc iri irl irn irr irt ita itb itc iti itl itn itt la- laa lab lac lai lal lan lar lat lba lbb lbc lbi lbl lbr lbt lca lcb lcc lci lcl lcn lcr lct lia lib lic lii lil lin lir lit lla llb llc lli lll lln llr llt lna lnb lnc lni lnl lnn lnr lnt lra lrb lrc lri lrn lrr lrt lta ltb ltc lti ltl ltr ltt n-i naa nab nac nai nal nan nar nat nba nbb nbc nbi nbl nbn nbr nbt nca ncb ncc nci ncl ncn ncr nct nia nib nic nii nil nin nir nit nla nlb nlc nli nll nln nlr nlt nna nnb nnc nni nnl nnn nnt nra nrb nrc nri nrl nrn nrr nrt nta ntb ntc nti ntn ntr ntt ra- raa rab rac rai ral ran rar rat rba rbb rbc rbi rbl rbn rbr rbt rca rcb rcc rci rcl rcn rcr rct ria rib ric rii ril rin rir rit rla rlc rli rll rln rlr rlt rna rnb rnc rni rnn rnr rnt rra rrb rrc rri rrl rrn rrr rrt rta rtb rtc rti rtl rtn rtr rtt taa tab tac tai tal tan tar tat tba tbb tbc tbi tbl tbn tbr tbt tca tcb tcc tci tcl tcn tcr tct tia tib tic tii til tin tir tit tla tlc tli tll tln tlr tlt tna tnb tnc tni tnl tnn tnr tnt tra trb trc tri trl trn trr trt tta ttb ttc tti ttl ttn ttr ttt