a-a a-b a-c aaa aab aac aad aah aan aau aav ab- aba abb abc abd abh abn abu abv ac- aca acb acc acd ach acn acu acv ad- ada adb adc add adh adn adu adv aha ahb ahc ahd ahh ahn ahu ahv an- ana anb anc and anh ann anu anv au- aua aub auc aud auh aun auv av- ava avb avc avd avh avn avu b-u baa bab bac bad bah ban bau bav bba bbb bbc bbd bbh bbn bbu bca bcb bcc bcd bch bcn bcu bcv bda bdb bdc bdd bdh bdu bdv bha bhb bhc bhd bhh bhu bhv bna bnb bnc bnd bnn bnu bnv bua bub buc bud buh bun buu bva bvb bvc bvd bvh bvn bvu bvv c-- caa cab cac cad cah can cau cav cba cbb cbc cbd cbh cbn cbu cbv cca ccb ccc ccd cch ccn ccu ccv cda cdb cdc cdd cdh cdn cdu cdv ch- cha chb chc chd chh chn chu chv cn- cna cnb cnc cnd cnh cnn cnu cnv cua cub cuc cud cuh cun cuu cuv cva cvb cvc cvd cvh cvn cvu cvv daa dab dac dad dah dan dau dav dba dbb dbc dbd dbh dbn dbu dbv dca dcb dcc dcd dcn dcu dcv dda ddb ddc ddd ddh ddn ddu dh- dha dhb dhc dhd dhh dhu dna dnb dnc dnd dnh dnn dua dub duc dud duh dun duv dva dvb dvc dvd dvh dvn dvu haa hab hac had hah han hau hav hba hbb hbc hbd hbh hbn hbu hbv hca hcb hcc hcd hch hcn hcv hda hdb hdc hdd hdh hdn hdu hdv hha hhb hhc hhd hhh hhn hhu hhv hna hnb hnc hnd hnh hnn hnu hnv hua hub huc hud huh hun huu huv hv- hva hvb hvc hvd hvn hvv naa nab nac nad nah nan nau nav nba nbb nbc nbd nbn nbu nbv nca ncb ncc ncd nch ncn ncu ncv nda ndb ndc ndd ndh ndn ndu ndv nha nhb nhc nhd nhh nhn nhu nhv nna nnb nnc nnh nnn nnu nnv nua nub nuc nud nuh nun nuu nuv nva nvb nvc nvd nvh nvn nvu nvv ua- uaa uab uac uad uah uan uau uav uba ubb ubc ubh ubn ubu ubv uca ucb ucc ucd uch ucn ucu ucv uda udb udc udd udn udu udv uha uhb uhc uhd uhh uhu uhv un- una unb unc und unh unn unu unv uua uuc uun uuu uva uvb uvc uvu uvv v-a vaa vab vac vad vah van vau vav vba vbc vbd vbh vbv vca vcc vcd vch vcn vcu vdb vdc vdd vdh vdu vdv vh- vha vhb vhc vhd vn- vna vnd vnu vnv vuv vva vvb vvc vvv