-al -er a-a a-b a-i a-t aaa aab aae aaf aai aak aal aan aar aat ab- aba abb abe abf abi abk abl abn abr abt aea aeb aee aef aei aek ael aen aer aet af- afa afb afe aff afi afk afl afn afr aft ai- aia aib aie aif aii aik ail ain air ait aka akb ake aki akk akl akn akr al- ala alb ale alf ali alk all aln alr alt an- ana anb ane anf ani ank anl ann anr ant ar- ara arb are arf ari ark arl arn arr art at- ata atb ate atf ati atl atn atr att baa bab bae baf bai bak bal ban bar bat bba bbb bbe bbf bbi bbk bbl bbn bbr bbt be- bea beb bee bef bei bek bel ben ber bet bfa bfb bfe bff bfi bfl bfn bfr bft bi- bia bib bie bif bii bik bil bin bir bit bka bkb bke bkf bkk bkl bkn bkr bkt bla blb ble blf bli blk bll bln blr blt bna bnb bne bnf bni bnk bnl bnn bnr bnt bra brb bre brf bri brk brl brn brr brt bta btb bte btf bti btk btl btn btr btt eaa eab eae eaf eai eak eal ean ear eat eba ebb ebe ebf ebi ebk ebl ebn ebr ebt eea eeb eee eef eek eel een eer eet ef- efa efb efe eff efi efl efr eft eia eib eie eif eii eik eil ein eir eit eka ekb eke ekf eki ekl ekr ekt ela elb ele elf eli elk ell eln elr elt en- ena enb ene enf eni enk enl enn enr ent era erb ere erf eri erk erl ern err ert eta etb ete etf eti etk etl etn etr ett faa fab fae faf fai fak fal fan far fat fba fbb fbe fbf fbi fbk fbl fbn fbr fbt fea feb fee fef fei fek fel fen fer fet ffa ffe fff ffi ffk ffl ffn ffr fft fia fib fie fif fii fik fil fin fir fit fka fkb fkf fki fkk fkl fkt fla flb fle flf fli fll fln flr flt fna fnb fne fnf fni fnk fnl fnn fnr fnt fra frb fre frf fri frk frl frn frr frt fta ftb fte ftf fti ftk ftl ftn ftr ftt i-f ia- iaa iab iae iaf iai ial ian iar iat iba ibb ibe ibf ibi ibk ibl ibn ibr ibt ie- iea iee ief iei iek iel ien ier iet ifa ifb ife iff ifi ifl ifn ifr ift iia iib iie iif iii iil iin iir iit ika ikb ike ikf iki ikk ikl ikr ikt il- ila ilb ile ilf ili ilk ill iln ilr ilt in- ina inb ine inf ini ink inl inn inr int ir- ira irb ire irf iri irk irl irn irr irt ita itb ite itf iti itk itl itn itt k-t ka- kaa kab kae kaf kai kak kal kan kar kat kba kbb kbe kbf kbi kbk kbl kbn kbr ke- kea keb kee kef kei kek kel ken ker ket kfa kff kfi kia kib kie kif kii kik kil kin kir kit kkb kke kki kkk kkl kkn kkr kkt kl- kla klb klf kli klr klt kn- kna kne knf kni knk knl knn knr knt kra krf kri krk krl krn krr krt kta ktb kte ktf ktk ktl ktn ktr ktt la- laa lab lae laf lai lak lal lan lar lat lba lbb lbe lbf lbi lbk lbl lbr lbt lea leb lee lef lei lek lel len ler let lfa lfb lfe lff lfi lfk lfl lfn lfr lft lia lib lie lif lii lik lil lin lir lit lka lkb lkl lkr lkt lla llb lle llf lli llk lll lln llr llt lna lnb lne lni lnk lnl lnn lnr lnt lra lrb lrf lri lrk lrn lrr lrt lta ltb lte ltf lti ltk ltl ltr ltt n-i naa nab nae naf nai nak nal nan nar nat nba nbb nbe nbf nbi nbk nbl nbn nbr nbt ne- nea neb nee nef nei nek nel nen ner net nfa nfb nfe nff nfi nfk nfl nfn nfr nft nia nib nie nif nii nik nil nin nir nit nka nke nkf nki nkk nkn nkr nkt nla nlb nle nlf nli nlk nll nln nlr nlt nna nnb nne nnf nni nnk nnl nnn nnt nra nrb nre nrf nri nrk nrl nrn nrr nrt nta ntb nte ntf nti ntk ntn ntr ntt ra- raa rab rae raf rai rak ral ran rar rat rba rbb rbe rbf rbi rbk rbl rbn rbr rbt re- rea reb ree ref rei rek rel ren rer ret rfa rfb rfe rff rfi rfk rfl rfn rfr rft ria rib rie rif rii rik ril rin rir rit rkb rke rkf rkk rkt rla rle rlf rli rll rln rlr rlt rna rnb rni rnn rnr rnt rra rrb rrf rri rrk rrl rrn rrr rrt rta rtb rte rtf rti rtk rtl rtn rtr rtt taa tab tae taf tai tak tal tan tar tat tba tbb tbe tbf tbi tbk tbl tbn tbr tbt te- tea teb tee tef tei tek tel ten ter tet tfa tfb tfe tff tfi tfk tfl tfn tfr tft tia tib tie tif tii tik til tin tir tit tka tkb tke tkk tkl tkr tkt tla tle tlf tli tlk tll tln tlr tlt tna tnb tne tnf tni tnk tnl tnn tnr tnt tra trb tre trf tri trk trl trn trr trt tta ttb tte ttf tti ttk ttl ttn ttr ttt