-al a-a a-b a-c aaa aab aac aad aah aal aau ab- aba abb abc abd abh abl abu ac- aca acb acc acd ach acl acu ad- ada adb adc add adh adl adu aha ahb ahc ahd ahh ahl ahu al- ala alb alc ald alh all alu au- aua aub auc aud auh aul b-u baa bab bac bad bah bal bau bba bbb bbc bbd bbh bbl bbu bca bcb bcc bcd bch bcl bcu bda bdb bdc bdd bdh bdl bdu bha bhb bhc bhd bhh bhl bhu bla blb blc bld blh bll blu bua bub buc bud buh bul buu c-- caa cab cac cad cah cal cau cba cbb cbc cbd cbh cbl cbu cca ccb ccc ccd cch ccl ccu cda cdb cdc cdd cdh cdl cdu ch- cha chb chc chd chh chl chu cl- cla clb clc cld clh cll clu cua cub cuc cud cuh cul cuu daa dab dac dad dah dal dau dba dbb dbc dbd dbh dbl dbu dca dcb dcc dcd dcl dcu dda ddb ddc ddd ddh ddl ddu dh- dha dhb dhc dhd dhh dhl dhu dl- dla dlb dlc dld dlh dll dlu dua dub duc dud duh dul haa hab hac had hah hal hau hba hbb hbc hbd hbh hbl hbu hca hcb hcc hcd hch hcl hda hdb hdc hdd hdh hdl hdu hha hhb hhc hhd hhh hhl hhu hla hlb hlc hld hlh hll hlu hua hub huc hud huh hul huu la- laa lab lac lad lah lal lau lba lbb lbc lbd lbh lbl lbu lca lcb lcc lcd lch lcl lcu lda ldb ldc ldd ldh ldl ldu lha lhb lhc lhd lhh lhu lla llb llc lld lll llu lua lub luc lud luh lul luu ua- uaa uab uac uad uah ual uau uba ubb ubc ubh ubl ubu uca ucb ucc ucd uch ucl ucu uda udb udc udd udl udu uha uhb uhc uhd uhh uhl uhu ula ulb ulc uld ull ulu uua uuc uuu