-al -er a-a a-b a-i a-t aaa aab aae aaf aai aak aal aar aat ab- aba abb abe abf abi abk abl abr abt aea aeb aee aef aei aek ael aer aet af- afa afb afe aff afi afk afl afr aft ai- aia aib aie aif aii aik ail air ait aka akb ake aki akk akl akr al- ala alb ale alf ali alk all alr alt ar- ara arb are arf ari ark arl arr art at- ata atb ate atf ati atl atr att baa bab bae baf bai bak bal bar bat bba bbb bbe bbf bbi bbk bbl bbr bbt be- bea beb bee bef bei bek bel ber bet bfa bfb bfe bff bfi bfl bfr bft bi- bia bib bie bif bii bik bil bir bit bka bkb bke bkf bkk bkl bkr bkt bla blb ble blf bli blk bll blr blt bra brb bre brf bri brk brl brr brt bta btb bte btf bti btk btl btr btt eaa eab eae eaf eai eak eal ear eat eba ebb ebe ebf ebi ebk ebl ebr ebt eea eeb eee eef eek eel eer eet ef- efa efb efe eff efi efl efr eft eia eib eie eif eii eik eil eir eit eka ekb eke ekf eki ekl ekr ekt ela elb ele elf eli elk ell elr elt era erb ere erf eri erk erl err ert eta etb ete etf eti etk etl etr ett faa fab fae faf fai fak fal far fat fba fbb fbe fbf fbi fbk fbl fbr fbt fea feb fee fef fei fek fel fer fet ffa ffe fff ffi ffk ffl ffr fft fia fib fie fif fii fik fil fir fit fka fkb fkf fki fkk fkl fkt fla flb fle flf fli fll flr flt fra frb fre frf fri frk frl frr frt fta ftb fte ftf fti ftk ftl ftr ftt i-f ia- iaa iab iae iaf iai ial iar iat iba ibb ibe ibf ibi ibk ibl ibr ibt ie- iea iee ief iei iek iel ier iet ifa ifb ife iff ifi ifl ifr ift iia iib iie iif iii iil iir iit ika ikb ike ikf iki ikk ikl ikr ikt il- ila ilb ile ilf ili ilk ill ilr ilt ir- ira irb ire irf iri irk irl irr irt ita itb ite itf iti itk itl itt k-t ka- kaa kab kae kaf kai kak kal kar kat kba kbb kbe kbf kbi kbk kbl kbr ke- kea keb kee kef kei kek kel ker ket kfa kff kfi kia kib kie kif kii kik kil kir kit kkb kke kki kkk kkl kkr kkt kl- kla klb klf kli klr klt kra krf kri krk krl krr krt kta ktb kte ktf ktk ktl ktr ktt la- laa lab lae laf lai lak lal lar lat lba lbb lbe lbf lbi lbk lbl lbr lbt lea leb lee lef lei lek lel ler let lfa lfb lfe lff lfi lfk lfl lfr lft lia lib lie lif lii lik lil lir lit lka lkb lkl lkr lkt lla llb lle llf lli llk lll llr llt lra lrb lrf lri lrk lrr lrt lta ltb lte ltf lti ltk ltl ltr ltt ra- raa rab rae raf rai rak ral rar rat rba rbb rbe rbf rbi rbk rbl rbr rbt re- rea reb ree ref rei rek rel rer ret rfa rfb rfe rff rfi rfk rfl rfr rft ria rib rie rif rii rik ril rir rit rkb rke rkf rkk rkt rla rle rlf rli rll rlr rlt rra rrb rrf rri rrk rrl rrr rrt rta rtb rte rtf rti rtk rtl rtr rtt taa tab tae taf tai tak tal tar tat tba tbb tbe tbf tbi tbk tbl tbr tbt te- tea teb tee tef tei tek tel ter tet tfa tfb tfe tff tfi tfk tfl tfr tft tia tib tie tif tii tik til tir tit tka tkb tke tkk tkl tkr tkt tla tle tlf tli tlk tll tlr tlt tra trb tre trf tri trk trl trr trt tta ttb tte ttf tti ttk ttl ttr ttt