-al -er a-a a-b a-i aaa aab aae aaf aai aak aal aan aar ab- aba abb abe abf abi abk abl abn abr aea aeb aee aef aei aek ael aen aer af- afa afb afe aff afi afk afl afn afr ai- aia aib aie aif aii aik ail ain air aka akb ake aki akk akl akn akr al- ala alb ale alf ali alk all aln alr an- ana anb ane anf ani ank anl ann anr ar- ara arb are arf ari ark arl arn arr baa bab bae baf bai bak bal ban bar bba bbb bbe bbf bbi bbk bbl bbn bbr be- bea beb bee bef bei bek bel ben ber bfa bfb bfe bff bfi bfl bfn bfr bi- bia bib bie bif bii bik bil bin bir bka bkb bke bkf bkk bkl bkn bkr bla blb ble blf bli blk bll bln blr bna bnb bne bnf bni bnk bnl bnn bnr bra brb bre brf bri brk brl brn brr eaa eab eae eaf eai eak eal ean ear eba ebb ebe ebf ebi ebk ebl ebn ebr eea eeb eee eef eek eel een eer ef- efa efb efe eff efi efl efr eia eib eie eif eii eik eil ein eir eka ekb eke ekf eki ekl ekr ela elb ele elf eli elk ell eln elr en- ena enb ene enf eni enk enl enn enr era erb ere erf eri erk erl ern err faa fab fae faf fai fak fal fan far fba fbb fbe fbf fbi fbk fbl fbn fbr fea feb fee fef fei fek fel fen fer ffa ffe fff ffi ffk ffl ffn ffr fia fib fie fif fii fik fil fin fir fka fkb fkf fki fkk fkl fla flb fle flf fli fll fln flr fna fnb fne fnf fni fnk fnl fnn fnr fra frb fre frf fri frk frl frn frr i-f ia- iaa iab iae iaf iai ial ian iar iba ibb ibe ibf ibi ibk ibl ibn ibr ie- iea iee ief iei iek iel ien ier ifa ifb ife iff ifi ifl ifn ifr iia iib iie iif iii iil iin iir ika ikb ike ikf iki ikk ikl ikr il- ila ilb ile ilf ili ilk ill iln ilr in- ina inb ine inf ini ink inl inn inr ir- ira irb ire irf iri irk irl irn irr ka- kaa kab kae kaf kai kak kal kan kar kba kbb kbe kbf kbi kbk kbl kbn kbr ke- kea keb kee kef kei kek kel ken ker kfa kff kfi kia kib kie kif kii kik kil kin kir kkb kke kki kkk kkl kkn kkr kl- kla klb klf kli klr kn- kna kne knf kni knk knl knn knr kra krf kri krk krl krn krr la- laa lab lae laf lai lak lal lan lar lba lbb lbe lbf lbi lbk lbl lbr lea leb lee lef lei lek lel len ler lfa lfb lfe lff lfi lfk lfl lfn lfr lia lib lie lif lii lik lil lin lir lka lkb lkl lkr lla llb lle llf lli llk lll lln llr lna lnb lne lni lnk lnl lnn lnr lra lrb lrf lri lrk lrn lrr n-i naa nab nae naf nai nak nal nan nar nba nbb nbe nbf nbi nbk nbl nbn nbr ne- nea neb nee nef nei nek nel nen ner nfa nfb nfe nff nfi nfk nfl nfn nfr nia nib nie nif nii nik nil nin nir nka nke nkf nki nkk nkn nkr nla nlb nle nlf nli nlk nll nln nlr nna nnb nne nnf nni nnk nnl nnn nra nrb nre nrf nri nrk nrl nrn nrr ra- raa rab rae raf rai rak ral ran rar rba rbb rbe rbf rbi rbk rbl rbn rbr re- rea reb ree ref rei rek rel ren rer rfa rfb rfe rff rfi rfk rfl rfn rfr ria rib rie rif rii rik ril rin rir rkb rke rkf rkk rla rle rlf rli rll rln rlr rna rnb rni rnn rnr rra rrb rrf rri rrk rrl rrn rrr