-al a-a a-b aaa aab aad aae aaf aal aan aau ab- aba abb abd abe abf abl abn abu ad- ada adb add ade adf adl adn adu aea aeb aed aee aef ael aen aeu af- afa afb afd afe aff afl afn afu al- ala alb ald ale alf all aln alu an- ana anb and ane anf anl ann anu au- aua aub aud aue auf aul aun b-u baa bab bad bae baf bal ban bau bba bbb bbd bbe bbf bbl bbn bbu bda bdb bdd bde bdf bdl bdu be- bea beb bed bee bef bel ben beu bfa bfb bfd bfe bff bfl bfn bfu bla blb bld ble blf bll bln blu bna bnb bnd bne bnf bnl bnn bnu bua bub bud bue buf bul bun buu daa dab dad dae daf dal dan dau dba dbb dbd dbe dbf dbl dbn dbu dda ddb ddd dde ddf ddl ddn ddu de- dea deb ded dee def del den deu dfa dfb dfd dfe dff dfl dfn dfu dl- dla dlb dld dle dlf dll dlu dna dnb dnd dne dnf dnl dnn dua dub dud due duf dul dun eaa eab ead eae eaf eal ean eau eba ebb ebd ebe ebf ebl ebn ebu ed- eda edb edd ede edf edl edn edu eea eeb eed eee eef eel een ef- efa efb efd efe eff efl ela elb eld ele elf ell eln elu en- ena enb end ene enf enl enn enu eu- eua eub eud eue euf eul eun faa fab fad fae faf fal fan fau fba fbb fbd fbe fbf fbl fbn fbu fda fdb fdd fde fdf fdl fdn fdu fea feb fed fee fef fel fen feu ffa ffd ffe fff ffl ffn ffu fla flb fld fle flf fll fln flu fna fnb fnd fne fnf fnl fnn fnu fua fub fud fue fuf ful fun fuu la- laa lab lad lae laf lal lan lau lba lbb lbd lbe lbf lbl lbu lda ldb ldd lde ldf ldl ldn ldu lea leb led lee lef lel len leu lfa lfb lfd lfe lff lfl lfn lfu lla llb lld lle llf lll lln llu lna lnb lnd lne lnl lnn lnu lua lub lud lue luf lul lun luu naa nab nad nae naf nal nan nau nba nbb nbd nbe nbf nbl nbn nbu nda ndb ndd nde ndf ndl ndn ndu ne- nea neb ned nee nef nel nen neu nfa nfb nfd nfe nff nfl nfn nfu nla nlb nld nle nlf nll nln nlu nna nnb nne nnf nnl nnn nnu nua nub nud nue nul nun nuu ua- uaa uab uad uae uaf ual uan uau uba ubb ube ubf ubl ubn ubu uda udb udd ude udf udl udn udu uea ueb ued uee uef uel uen ufa ufd ufe uff ufl ufn ufu ula ulb uld ule ulf ull uln ulu un- una unb und une unf unl unn unu uua uue uun uuu