a-a a-b a-c aaa aab aac aad aam aan aar aau ab- aba abb abc abd abm abn abr abu ac- aca acb acc acd acm acn acr acu ad- ada adb adc add adm adn adr adu ama amb amc amd amm amn amr amu an- ana anb anc and anm ann anr anu ar- ara arb arc ard arm arn arr aru au- aua aub auc aud aum aun aur b-u baa bab bac bad bam ban bar bau bba bbb bbc bbd bbm bbn bbr bbu bca bcb bcc bcd bcm bcn bcr bcu bda bdb bdc bdd bdm bdr bdu bma bmb bmc bmd bmm bmn bmr bmu bna bnb bnc bnd bnn bnr bnu bra brb brd brm brn brr bru bua bub buc bud bum bun bur buu c-- caa cab cac cad cam can car cau cba cbb cbc cbd cbm cbn cbr cbu cca ccb ccc ccd ccm ccn ccr ccu cda cdb cdc cdd cdm cdn cdr cdu cma cmb cmc cmd cmm cmn cmr cmu cn- cna cnb cnc cnd cnm cnn cnr cnu cra crb crc crd crm crn crr cru cua cub cuc cud cum cun cur cuu daa dab dac dad dam dan dar dau dba dbb dbc dbd dbm dbn dbr dbu dca dcb dcc dcd dcm dcn dcr dcu dda ddb ddc ddd ddm ddn ddr ddu dma dmb dmc dmd dmm dmn dmr dmu dna dnb dnc dnd dnm dnn dnr dra drb drc drd drm drn drr dru dua dub duc dud dum dun dur m-r maa mab mac mad mam man mar mau mba mbb mbc mbd mbm mbr mbu mc- mca mcb mcc mcd mcm mcn mcr mcu mda mdb mdc mdd mdm mdn mdr mdu mma mmb mmc mmd mmm mmn mmr mmu mna mnb mnc mnm mnn mnr mnu mra mrb mrc mrd mrm mrn mrr mru mua mub muc mud mum mun mur muu naa nab nac nad nam nan nar nau nba nbb nbc nbd nbm nbn nbr nbu nca ncb ncc ncd ncm ncn ncr ncu nda ndb ndc ndd ndm ndn ndr ndu nma nmb nmc nmd nmm nmn nmr nmu nna nnb nnc nnm nnn nnu nra nrb nrc nrd nrm nrn nrr nru nua nub nuc nud num nun nur nuu ra- raa rab rac rad ram ran rar rau rba rbb rbc rbd rbm rbn rbr rbu rca rcb rcc rcd rcm rcn rcr rcu rda rdb rdc rdd rdm rdn rdr rdu rma rmb rmc rmd rmm rmn rmr rna rnb rnc rnd rnm rnn rnr rnu rra rrb rrc rrd rrm rrn rrr rru rua rub ruc rud rum run rur ruu ua- uaa uab uac uad uam uan uar uau uba ubb ubc ubn ubr ubu uca ucb ucc ucd ucm ucn ucr ucu uda udb udc udd udm udn udr udu um- uma umb umc umd umm umn umr umu un- una unb unc und unm unn unr unu ur- ura urb urc urd urm urn urr uru uua uuc uum uun uur uuu