a-a a-b a-c aaa aab aac aad aae aah aak aan aau ab- aba abb abc abd abe abh abk abn abu ac- aca acb acc acd ace ach ack acn acu ad- ada adb adc add ade adh adk adn adu aea aeb aec aed aee aeh aek aen aeu aha ahb ahc ahd ahe ahh ahk ahn ahu aka akb akc akd ake akh akk akn aku an- ana anb anc and ane anh ank ann anu au- aua aub auc aud aue auh auk aun b-u baa bab bac bad bae bah bak ban bau bba bbb bbc bbd bbe bbh bbk bbn bbu bca bcb bcc bcd bce bch bck bcn bcu bda bdb bdc bdd bde bdh bdk bdu be- bea beb bec bed bee beh bek ben beu bha bhb bhc bhd bhe bhh bhk bhu bka bkb bkc bke bkk bkn bna bnb bnc bnd bne bnk bnn bnu bua bub buc bud bue buh buk bun buu c-- caa cab cac cad cae cah cak can cau cba cbb cbc cbd cbe cbh cbk cbn cbu cca ccb ccc ccd cce cch cck ccn ccu cda cdb cdc cdd cde cdh cdk cdn cdu ce- cea ceb cec ced cee ceh cek cen ceu ch- cha chb chc chd che chh chk chn chu cka ckb ckc ckd ckh cn- cna cnb cnc cnd cne cnh cnn cnu cua cub cuc cud cue cuh cuk cun cuu daa dab dac dad dae dah dak dan dau dba dbb dbc dbd dbe dbh dbk dbn dbu dca dcb dcc dcd dce dck dcn dcu dda ddb ddc ddd dde ddh ddk ddn ddu de- dea deb dec ded dee deh dek den deu dh- dha dhb dhc dhd dhe dhh dhk dhu dka dkb dkc dke dkk dku dna dnb dnc dnd dne dnh dnk dnn dua dub duc dud due duh duk dun eaa eab eac ead eae eah eak ean eau eba ebb ebc ebd ebe ebh ebk ebn ebu ec- eca ecb ecc ecd ece ech eck ecn ecu ed- eda edb edc edd ede edh edk edn edu eea eeb eec eed eee eek een eha ehb ehc ehd ehe ehh ehn ehu eka ekb ekc ekd eke ekh eku en- ena enb enc end ene enh enk enn enu eu- eua eub euc eud eue eun haa hab hac had hae hah hak han hau hba hbb hbc hbd hbe hbh hbk hbn hbu hca hcb hcc hcd hce hch hck hcn hda hdb hdc hdd hde hdh hdk hdn hdu he- hea heb hec hed hee heh hek hen heu hha hhb hhc hhd hhe hhh hhk hhn hhu hka hkb hkd hkh hkk hkn hku hna hnb hnc hnd hne hnh hnk hnn hnu hua hub huc hud hue huh huk hun huu ka- kaa kab kac kad kae kah kak kan kau kba kbb kbc kbd kbe kbh kbk kbn kbu kca kcb kcc kcd kce kch kck kcn kcu kda kdb kdc kde kdh kdk kdu ke- kea keb kec ked kee keh kek ken kha khe khh khk khn khu kkb kkc kke kkh kkk kkn kku kn- kna knc knd kne knk knn knu kub kuc kud kue kuh kuk kun kuu naa nab nac nad nae nah nak nan nau nba nbb nbc nbd nbe nbk nbn nbu nca ncb ncc ncd nce nch nck ncn ncu nda ndb ndc ndd nde ndh ndk ndn ndu ne- nea neb nec ned nee neh nek nen neu nha nhb nhc nhd nhe nhh nhk nhn nhu nka nkc nke nkk nkn nku nna nnb nnc nne nnh nnk nnn nnu nua nub nuc nud nue nuh nuk nun nuu ua- uaa uab uac uad uae uah uak uan uau uba ubb ubc ube ubh ubk ubn ubu uca ucb ucc ucd uce uch uck ucn ucu uda udb udc udd ude udk udn udu uea ueb uec ued uee ueh uen uha uhb uhc uhd uhe uhh uhu uka ukb ukc uke ukk ukn uku un- una unb unc und une unh unk unn unu uua uuc uue uun uuu