-al a-a a-b a-c aaa aab aac aae aah aak aal aau ab- aba abb abc abe abh abk abl abu ac- aca acb acc ace ach ack acl acu aea aeb aec aee aeh aek ael aeu aha ahb ahc ahe ahh ahk ahl ahu aka akb akc ake akh akk akl aku al- ala alb alc ale alh alk all alu au- aua aub auc aue auh auk aul b-u baa bab bac bae bah bak bal bau bba bbb bbc bbe bbh bbk bbl bbu bca bcb bcc bce bch bck bcl bcu be- bea beb bec bee beh bek bel beu bha bhb bhc bhe bhh bhk bhl bhu bka bkb bkc bke bkk bkl bla blb blc ble blh blk bll blu bua bub buc bue buh buk bul buu c-- caa cab cac cae cah cak cal cau cba cbb cbc cbe cbh cbk cbl cbu cca ccb ccc cce cch cck ccl ccu ce- cea ceb cec cee ceh cek cel ceu ch- cha chb chc che chh chk chl chu cka ckb ckc ckh cl- cla clb clc cle clh clk cll clu cua cub cuc cue cuh cuk cul cuu eaa eab eac eae eah eak eal eau eba ebb ebc ebe ebh ebk ebl ebu ec- eca ecb ecc ece ech eck ecl ecu eea eeb eec eee eek eel eha ehb ehc ehe ehh ehl ehu eka ekb ekc eke ekh ekl eku ela elb elc ele elh elk ell elu eu- eua eub euc eue eul haa hab hac hae hah hak hal hau hba hbb hbc hbe hbh hbk hbl hbu hca hcb hcc hce hch hck hcl he- hea heb hec hee heh hek hel heu hha hhb hhc hhe hhh hhk hhl hhu hka hkb hkh hkk hkl hku hla hlb hlc hle hlh hll hlu hua hub huc hue huh huk hul huu ka- kaa kab kac kae kah kak kal kau kba kbb kbc kbe kbh kbk kbl kbu kca kcb kcc kce kch kck kcl kcu ke- kea keb kec kee keh kek kel kha khe khh khk khu kkb kkc kke kkh kkk kkl kku kl- kla klb klc klh klu kub kuc kue kuh kuk kul kuu la- laa lab lac lae lah lak lal lau lba lbb lbc lbe lbh lbk lbl lbu lca lcb lcc lce lch lck lcl lcu lea leb lec lee leh lek lel leu lha lhb lhc lhh lhk lhu lka lkb lkh lkl lla llb llc lle llk lll llu lua lub luc lue luh luk lul luu ua- uaa uab uac uae uah uak ual uau uba ubb ubc ube ubh ubk ubl ubu uca ucb ucc uce uch uck ucl ucu uea ueb uec uee ueh uel uha uhb uhc uhe uhh uhl uhu uka ukb ukc uke ukk ukl uku ula ulb ulc ule ulk ull ulu uua uuc uue uuu