-al -er a-a a-b a-i aaa aab aad aae aaf aag aai aak aal aar ab- aba abb abd abe abf abg abi abk abl abr ad- ada adb add ade adf adg adi adk adl adr aea aeb aed aee aef aeg aei aek ael aer af- afa afb afd afe aff afg afi afk afl afr ag- aga agb agd age agf agg agi agk agl agr ai- aia aib aid aie aif aig aii aik ail air aka akb akd ake akg aki akk akl akr al- ala alb ald ale alf alg ali alk all alr ar- ara arb ard are arf arg ari ark arl arr baa bab bad bae baf bag bai bak bal bar bba bbb bbd bbe bbf bbg bbi bbk bbl bbr bda bdb bdd bde bdf bdg bdi bdk bdl bdr be- bea beb bed bee bef beg bei bek bel ber bfa bfb bfd bfe bff bfg bfi bfl bfr bga bgb bgd bge bgf bgg bgi bgk bgl bgr bi- bia bib bid bie bif big bii bik bil bir bka bkb bke bkf bkg bkk bkl bkr bla blb bld ble blf blg bli blk bll blr bra brb brd bre brf brg bri brk brl brr daa dab dad dae daf dag dai dak dal dar dba dbb dbd dbe dbf dbg dbi dbk dbl dbr dda ddb ddd dde ddf ddg ddi ddk ddl ddr de- dea deb ded dee def deg dei dek del der dfa dfb dfd dfe dff dfg dfi dfk dfl dfr dga dgd dge dgf dgg dgi dgk dgl dgr di- dia dib did die dif dig dii dik dil dir dka dkb dke dkg dki dkk dkl dkr dl- dla dlb dld dle dlf dlg dli dlk dll dlr dra drb drd dre drg dri drk drl drr eaa eab ead eae eaf eag eai eak eal ear eba ebb ebd ebe ebf ebg ebi ebk ebl ebr ed- eda edb edd ede edf edg edi edk edl edr eea eeb eed eee eef eeg eek eel eer ef- efa efb efd efe eff efg efi efl efr ega egb egd ege egf egg egi egl egr eia eib eid eie eif eig eii eik eil eir eka ekb ekd eke ekf ekg eki ekl ekr ela elb eld ele elf elg eli elk ell elr era erb erd ere erf erg eri erk erl err faa fab fad fae faf fag fai fak fal far fba fbb fbd fbe fbf fbg fbi fbk fbl fbr fda fdb fdd fde fdf fdg fdi fdk fdl fdr fea feb fed fee fef feg fei fek fel fer ffa ffd ffe fff ffg ffi ffk ffl ffr fga fgb fgd fge fgf fgg fgi fgl fgr fia fib fid fie fif fig fii fik fil fir fka fkb fkf fkg fki fkk fkl fla flb fld fle flf flg fli fll flr fra frb frd fre frf frg fri frk frl frr g-d gaa gab gad gae gaf gag gai gak gal gar gba gbd gbe gbf gbg gbi gbk gbl gbr gda gdb gdd gde gdf gdi gdk gdl gdr ge- gea geb ged gee gef geg gei gek gel ger gfa gfb gfd gfe gff gfi gfk gfl gfr gga ggb ggd ggg ggi ggr gia gib gid gie gif gig gii gik gil gir gka gkb gkd gla glb gld gle glf glg gli glk gll glr gra grb grd gre grf grg gri grk grl grr i-d i-f ia- iaa iab iad iae iaf iag iai ial iar iba ibb ibd ibe ibf ibg ibi ibk ibl ibr ida idb idd ide idf idg idi idk idl idr ie- iea ied iee ief ieg iei iek iel ier ifa ifb ifd ife iff ifg ifi ifl ifr iga igb igd ige igf igg igi igk igl igr iia iib iid iie iif iii iil iir ika ikb ike ikf iki ikk ikl ikr il- ila ilb ild ile ilf ilg ili ilk ill ilr ir- ira irb ird ire irf irg iri irk irl irr ka- kaa kab kad kae kaf kag kai kak kal kar kba kbb kbd kbe kbf kbi kbk kbl kbr kda kdb kde kdf kdg kdk kdl kdr ke- kea keb ked kee kef keg kei kek kel ker kfa kfd kff kfg kfi kga kgb kgd kgf kgi kgl kia kib kid kie kif kig kii kik kil kir kkb kke kki kkk kkl kkr kl- kla klb kld klf klg kli klr kra krd krf krg kri krk krl krr la- laa lab lad lae laf lag lai lak lal lar lba lbb lbd lbe lbf lbg lbi lbk lbl lbr lda ldb ldd lde ldf ldg ldi ldk ldl ldr lea leb led lee lef leg lei lek lel ler lfa lfb lfd lfe lff lfg lfi lfk lfl lfr lga lgb lgd lge lgf lgg lgi lgk lgl lgr lia lib lid lie lif lig lii lik lil lir lka lkb lkg lkl lkr lla llb lld lle llf llg lli llk lll llr lra lrb lrd lrf lrg lri lrk lrr ra- raa rab rad rae raf rag rai rak ral rar rba rbb rbd rbe rbf rbg rbi rbk rbl rbr rda rdb rdd rde rdf rdg rdi rdl rdr re- rea reb red ree ref reg rei rek rel rer rfa rfb rfd rfe rff rfg rfi rfk rfl rfr rga rgb rgd rge rgf rgg rgi rgk rgr ria rib rid rie rif rig rii rik ril rir rkb rke rkf rkg rkk rla rld rle rlf rlg rli rll rlr rra rrb rrd rrf rrg rri rrk rrl rrr