-al a-a a-b a-i aaa aab aad aae aag aai aak aal ab- aba abb abd abe abg abi abk abl ad- ada adb add ade adg adi adk adl aea aeb aed aee aeg aei aek ael ag- aga agb agd age agg agi agk agl ai- aia aib aid aie aig aii aik ail aka akb akd ake akg aki akk akl al- ala alb ald ale alg ali alk all baa bab bad bae bag bai bak bal bba bbb bbd bbe bbg bbi bbk bbl bda bdb bdd bde bdg bdi bdk bdl be- bea beb bed bee beg bei bek bel bga bgb bgd bge bgg bgi bgk bgl bi- bia bib bid bie big bii bik bil bka bkb bke bkg bkk bkl bla blb bld ble blg bli blk bll daa dab dad dae dag dai dak dal dba dbb dbd dbe dbg dbi dbk dbl dda ddb ddd dde ddg ddi ddk ddl de- dea deb ded dee deg dei dek del dga dgd dge dgg dgi dgk dgl di- dia dib did die dig dii dik dil dka dkb dke dkg dki dkk dkl dl- dla dlb dld dle dlg dli dlk dll eaa eab ead eae eag eai eak eal eba ebb ebd ebe ebg ebi ebk ebl ed- eda edb edd ede edg edi edk edl eea eeb eed eee eeg eek eel ega egb egd ege egg egi egl eia eib eid eie eig eii eik eil eka ekb ekd eke ekg eki ekl ela elb eld ele elg eli elk ell g-d gaa gab gad gae gag gai gak gal gba gbd gbe gbg gbi gbk gbl gda gdb gdd gde gdi gdk gdl ge- gea geb ged gee geg gei gek gel gga ggb ggd ggg ggi gia gib gid gie gig gii gik gil gka gkb gkd gla glb gld gle glg gli glk gll i-d ia- iaa iab iad iae iag iai ial iba ibb ibd ibe ibg ibi ibk ibl ida idb idd ide idg idi idk idl ie- iea ied iee ieg iei iek iel iga igb igd ige igg igi igk igl iia iib iid iie iii iil ika ikb ike iki ikk ikl il- ila ilb ild ile ilg ili ilk ill ka- kaa kab kad kae kag kai kak kal kba kbb kbd kbe kbi kbk kbl kda kdb kde kdg kdk kdl ke- kea keb ked kee keg kei kek kel kga kgb kgd kgi kgl kia kib kid kie kig kii kik kil kkb kke kki kkk kkl kl- kla klb kld klg kli la- laa lab lad lae lag lai lak lal lba lbb lbd lbe lbg lbi lbk lbl lda ldb ldd lde ldg ldi ldk ldl lea leb led lee leg lei lek lel lga lgb lgd lge lgg lgi lgk lgl lia lib lid lie lig lii lik lil lka lkb lkg lkl lla llb lld lle llg lli llk lll