-al a-a a-b aaa aab aad aae aaf aal aau ab- aba abb abd abe abf abl abu ad- ada adb add ade adf adl adu aea aeb aed aee aef ael aeu af- afa afb afd afe aff afl afu al- ala alb ald ale alf all alu au- aua aub aud aue auf aul b-u baa bab bad bae baf bal bau bba bbb bbd bbe bbf bbl bbu bda bdb bdd bde bdf bdl bdu be- bea beb bed bee bef bel beu bfa bfb bfd bfe bff bfl bfu bla blb bld ble blf bll blu bua bub bud bue buf bul buu daa dab dad dae daf dal dau dba dbb dbd dbe dbf dbl dbu dda ddb ddd dde ddf ddl ddu de- dea deb ded dee def del deu dfa dfb dfd dfe dff dfl dfu dl- dla dlb dld dle dlf dll dlu dua dub dud due duf dul eaa eab ead eae eaf eal eau eba ebb ebd ebe ebf ebl ebu ed- eda edb edd ede edf edl edu eea eeb eed eee eef eel ef- efa efb efd efe eff efl ela elb eld ele elf ell elu eu- eua eub eud eue euf eul faa fab fad fae faf fal fau fba fbb fbd fbe fbf fbl fbu fda fdb fdd fde fdf fdl fdu fea feb fed fee fef fel feu ffa ffd ffe fff ffl ffu fla flb fld fle flf fll flu fua fub fud fue fuf ful fuu la- laa lab lad lae laf lal lau lba lbb lbd lbe lbf lbl lbu lda ldb ldd lde ldf ldl ldu lea leb led lee lef lel leu lfa lfb lfd lfe lff lfl lfu lla llb lld lle llf lll llu lua lub lud lue luf lul luu ua- uaa uab uad uae uaf ual uau uba ubb ube ubf ubl ubu uda udb udd ude udf udl udu uea ueb ued uee uef uel ufa ufd ufe uff ufl ufu ula ulb uld ule ulf ull ulu uua uue uuu