-er a-a a-b a-t aaa aab aae aag aak aan aar aat aau ab- aba abb abe abg abk abn abr abt abu aea aeb aee aeg aek aen aer aet aeu ag- aga agb age agg agk agn agr agt agu aka akb ake akg akk akn akr aku an- ana anb ane ang ank ann anr ant anu ar- ara arb are arg ark arn arr art aru at- ata atb ate atg atn atr att atu au- aua aub aue aug auk aun aur aut b-u baa bab bae bag bak ban bar bat bau bba bbb bbe bbg bbk bbn bbr bbt bbu be- bea beb bee beg bek ben ber bet beu bga bgb bge bgg bgk bgn bgr bgt bgu bka bkb bke bkg bkk bkn bkr bkt bna bnb bne bng bnk bnn bnr bnt bnu bra brb bre brg brk brn brr brt bru bta btb bte btg btk btn btr btt btu bua bub bue bug buk bun bur but buu eaa eab eae eag eak ean ear eat eau eba ebb ebe ebg ebk ebn ebr ebt ebu eea eeb eee eeg eek een eer eet ega egb ege egg egn egr egt egu eka ekb eke ekg ekr ekt eku en- ena enb ene eng enk enn enr ent enu era erb ere erg erk ern err ert eru eta etb ete etg etk etn etr ett etu eu- eua eub eue eug eun eur eut gaa gab gae gag gak gan gar gat gau gba gbe gbg gbk gbn gbr gbt gbu ge- gea geb gee geg gek gen ger get geu gga ggb ggg ggn ggr ggt ggu gka gkb gkn gkt gna gnb gne gnn gnr gnt gnu gra grb gre grg grk grn grr grt gru gta gtb gte gtg gtk gtn gtr gtt gtu gu- gua gub gue gug guk gun gur gut guu k-t ka- kaa kab kae kag kak kan kar kat kau kba kbb kbe kbk kbn kbr kbu ke- kea keb kee keg kek ken ker ket kga kgb kgu kkb kke kkk kkn kkr kkt kku kn- kna kne kng knk knn knr knt knu kra krg krk krn krr krt kru kta ktb kte ktg ktk ktn ktr ktt ktu kub kue kug kuk kun kur kut kuu naa nab nae nag nak nan nar nat nau nba nbb nbe nbg nbk nbn nbr nbt nbu ne- nea neb nee neg nek nen ner net neu nga ngb nge ngg ngk ngn ngt ngu nka nke nkk nkn nkr nkt nku nna nnb nne nng nnk nnn nnt nnu nra nrb nre nrg nrk nrn nrr nrt nru nta ntb nte ntg ntk ntn ntr ntt ntu nua nub nue nug nuk nun nur nut nuu ra- raa rab rae rag rak ran rar rat rau rba rbb rbe rbg rbk rbn rbr rbt rbu re- rea reb ree reg rek ren rer ret reu rga rgb rge rgg rgk rgn rgr rgt rkb rke rkg rkk rkt rku rna rnb rng rnn rnr rnt rnu rra rrb rrg rrk rrn rrr rrt rru rta rtb rte rtg rtk rtn rtr rtt rtu rua rub rue rug ruk run rur rut ruu taa tab tae tag tak tan tar tat tau tba tbb tbe tbg tbk tbn tbr tbt tbu te- tea teb tee teg tek ten ter tet teu tga tgb tge tgg tgk tgn tgr tgt tgu tka tkb tke tkg tkk tkr tkt tna tnb tne tng tnk tnn tnr tnt tra trb tre trg trk trn trr trt tru tta ttb tte ttg ttk ttn ttr ttt ttu tua tub tue tug tuk tun tur tut tuu ua- uaa uab uae uag uak uan uar uat uau uba ubb ube ubg ubk ubn ubr ubt ubu uea ueb uee ueg uen uer uet uga ugb uge ugg ugk ugn ugr ugt ugu uka ukb uke ukk ukn ukr uku un- una unb une ung unk unn unr unt unu ur- ura urb ure urg urk urn urr urt uru uta utb ute utk utn utr utt utu uua uue uug uun uur uut uuu