-al -ic a-a a-b a-c a-i a-t aaa aab aac aaf aai aal aan aar aat ab- aba abb abc abf abi abl abn abr abt ac- aca acb acc acf aci acl acn acr act af- afa afb afc aff afi afl afn afr aft ai- aia aib aic aif aii ail ain air ait al- ala alb alc alf ali all aln alr alt an- ana anb anc anf ani anl ann anr ant ar- ara arb arc arf ari arl arn arr art at- ata atb atc atf ati atl atn atr att baa bab bac baf bai bal ban bar bat bba bbb bbc bbf bbi bbl bbn bbr bbt bca bcb bcc bcf bci bcl bcn bcr bct bfa bfb bfc bff bfi bfl bfn bfr bft bi- bia bib bic bif bii bil bin bir bit bla blb blc blf bli bll bln blr blt bna bnb bnc bnf bni bnl bnn bnr bnt bra brb brf bri brl brn brr brt bta btb btc btf bti btl btn btr btt c-- caa cab cac caf cai cal can car cat cba cbb cbc cbf cbi cbl cbn cbr cbt cca ccb ccc ccf cci ccl ccn ccr cct cfa cfb cfc cff cfi cfl cfn cfr cft ci- cia cib cic cif cii cil cin cir cit cl- cla clb clc clf cli cll cln clr clt cn- cna cnb cnc cnf cni cnl cnn cnr cnt cra crb crc crf cri crl crn crr crt cta ctb ctc ctf cti ctl ctn ctr ctt faa fab fac faf fai fal fan far fat fba fbb fbc fbf fbi fbl fbn fbr fbt fca fcb fcc fcf fci fcl fcn fcr fct ffa ffc fff ffi ffl ffn ffr fft fia fib fic fif fii fil fin fir fit fla flb flc flf fli fll fln flr flt fna fnb fnc fnf fni fnl fnn fnr fnt fra frb frc frf fri frl frn frr frt fta ftb ftc ftf fti ftl ftn ftr ftt i-f ia- iaa iab iac iaf iai ial ian iar iat iba ibb ibc ibf ibi ibl ibn ibr ibt ica icb icc icf ici icl icn icr ict ifa ifb ifc iff ifi ifl ifn ifr ift iia iib iic iif iii iil iin iir iit il- ila ilb ilc ilf ili ill iln ilr ilt in- ina inb inc inf ini inl inn inr int ir- ira irb irc irf iri irl irn irr irt ita itb itc itf iti itl itn itt la- laa lab lac laf lai lal lan lar lat lba lbb lbc lbf lbi lbl lbr lbt lca lcb lcc lcf lci lcl lcn lcr lct lfa lfb lfc lff lfi lfl lfn lfr lft lia lib lic lif lii lil lin lir lit lla llb llc llf lli lll lln llr llt lna lnb lnc lni lnl lnn lnr lnt lra lrb lrc lrf lri lrn lrr lrt lta ltb ltc ltf lti ltl ltr ltt n-i naa nab nac naf nai nal nan nar nat nba nbb nbc nbf nbi nbl nbn nbr nbt nca ncb ncc ncf nci ncl ncn ncr nct nfa nfb nfc nff nfi nfl nfn nfr nft nia nib nic nif nii nil nin nir nit nla nlb nlc nlf nli nll nln nlr nlt nna nnb nnc nnf nni nnl nnn nnt nra nrb nrc nrf nri nrl nrn nrr nrt nta ntb ntc ntf nti ntn ntr ntt ra- raa rab rac raf rai ral ran rar rat rba rbb rbc rbf rbi rbl rbn rbr rbt rca rcb rcc rcf rci rcl rcn rcr rct rfa rfb rfc rff rfi rfl rfn rfr rft ria rib ric rif rii ril rin rir rit rla rlc rlf rli rll rln rlr rlt rna rnb rnc rni rnn rnr rnt rra rrb rrc rrf rri rrl rrn rrr rrt rta rtb rtc rtf rti rtl rtn rtr rtt taa tab tac taf tai tal tan tar tat tba tbb tbc tbf tbi tbl tbn tbr tbt tca tcb tcc tcf tci tcl tcn tcr tct tfa tfb tfc tff tfi tfl tfn tfr tft tia tib tic tif tii til tin tir tit tla tlc tlf tli tll tln tlr tlt tna tnb tnc tnf tni tnl tnn tnr tnt tra trb trc trf tri trl trn trr trt tta ttb ttc ttf tti ttl ttn ttr ttt