-al -er a-a a-b a-t aaa aab aad aae aaf aak aal aar aat ab- aba abb abd abe abf abk abl abr abt ad- ada adb add ade adf adk adl adr adt aea aeb aed aee aef aek ael aer aet af- afa afb afd afe aff afk afl afr aft aka akb akd ake akk akl akr al- ala alb ald ale alf alk all alr alt ar- ara arb ard are arf ark arl arr art at- ata atb atd ate atf atl atr att baa bab bad bae baf bak bal bar bat bba bbb bbd bbe bbf bbk bbl bbr bbt bda bdb bdd bde bdf bdk bdl bdr bdt be- bea beb bed bee bef bek bel ber bet bfa bfb bfd bfe bff bfl bfr bft bka bkb bke bkf bkk bkl bkr bkt bla blb bld ble blf blk bll blr blt bra brb brd bre brf brk brl brr brt bta btb btd bte btf btk btl btr btt daa dab dad dae daf dak dal dar dat dba dbb dbd dbe dbf dbk dbl dbr dbt dda ddb ddd dde ddf ddk ddl ddr ddt de- dea deb ded dee def dek del der det dfa dfb dfd dfe dff dfk dfl dfr dft dka dkb dke dkk dkl dkr dkt dl- dla dlb dld dle dlf dlk dll dlr dlt dra drb drd dre drk drl drr drt dta dtb dtd dte dtf dtk dtl dtr dtt eaa eab ead eae eaf eak eal ear eat eba ebb ebd ebe ebf ebk ebl ebr ebt ed- eda edb edd ede edf edk edl edr edt eea eeb eed eee eef eek eel eer eet ef- efa efb efd efe eff efl efr eft eka ekb ekd eke ekf ekl ekr ekt ela elb eld ele elf elk ell elr elt era erb erd ere erf erk erl err ert eta etb etd ete etf etk etl etr ett faa fab fad fae faf fak fal far fat fba fbb fbd fbe fbf fbk fbl fbr fbt fda fdb fdd fde fdf fdk fdl fdr fdt fea feb fed fee fef fek fel fer fet ffa ffd ffe fff ffk ffl ffr fft fka fkb fkf fkk fkl fkt fla flb fld fle flf fll flr flt fra frb frd fre frf frk frl frr frt fta ftb ftd fte ftf ftk ftl ftr ftt k-t ka- kaa kab kad kae kaf kak kal kar kat kba kbb kbd kbe kbf kbk kbl kbr kda kdb kde kdf kdk kdl kdr kdt ke- kea keb ked kee kef kek kel ker ket kfa kfd kff kkb kke kkk kkl kkr kkt kl- kla klb kld klf klr klt kra krd krf krk krl krr krt kta ktb kte ktf ktk ktl ktr ktt la- laa lab lad lae laf lak lal lar lat lba lbb lbd lbe lbf lbk lbl lbr lbt lda ldb ldd lde ldf ldk ldl ldr ldt lea leb led lee lef lek lel ler let lfa lfb lfd lfe lff lfk lfl lfr lft lka lkb lkl lkr lkt lla llb lld lle llf llk lll llr llt lra lrb lrd lrf lrk lrr lrt lta ltb ltd lte ltf ltk ltl ltr ltt ra- raa rab rad rae raf rak ral rar rat rba rbb rbd rbe rbf rbk rbl rbr rbt rda rdb rdd rde rdf rdl rdr rdt re- rea reb red ree ref rek rel rer ret rfa rfb rfd rfe rff rfk rfl rfr rft rkb rke rkf rkk rkt rla rld rle rlf rll rlr rlt rra rrb rrd rrf rrk rrl rrr rrt rta rtb rtd rte rtf rtk rtl rtr rtt taa tab tad tae taf tak tal tar tat tba tbb tbd tbe tbf tbk tbl tbr tbt tda tdb tdd tde tdf tdk tdl tdr tdt te- tea teb ted tee tef tek tel ter tet tfa tfb tfd tfe tff tfk tfl tfr tft tka tkb tke tkk tkl tkr tkt tla tld tle tlf tlk tll tlr tlt tra trb trd tre trf trk trl trr trt tta ttb ttd tte ttf ttk ttl ttr ttt