-al -er a-a a-b a-c a-t aaa aab aac aae aak aal aar aat aau ab- aba abb abc abe abk abl abr abt abu ac- aca acb acc ace ack acl acr act acu aea aeb aec aee aek ael aer aet aeu aka akb akc ake akk akl akr aku al- ala alb alc ale alk all alr alt alu ar- ara arb arc are ark arl arr art aru at- ata atb atc ate atl atr att atu au- aua aub auc aue auk aul aur aut b-u baa bab bac bae bak bal bar bat bau bba bbb bbc bbe bbk bbl bbr bbt bbu bca bcb bcc bce bck bcl bcr bct bcu be- bea beb bec bee bek bel ber bet beu bka bkb bkc bke bkk bkl bkr bkt bla blb blc ble blk bll blr blt blu bra brb bre brk brl brr brt bru bta btb btc bte btk btl btr btt btu bua bub buc bue buk bul bur but buu c-- caa cab cac cae cak cal car cat cau cba cbb cbc cbe cbk cbl cbr cbt cbu cca ccb ccc cce cck ccl ccr cct ccu ce- cea ceb cec cee cek cel cer cet ceu cka ckb ckc ckt cl- cla clb clc cle clk cll clr clt clu cra crb crc cre crk crl crr crt cru cta ctb ctc cte ctk ctl ctr ctt ctu cua cub cuc cue cuk cul cur cut cuu eaa eab eac eae eak eal ear eat eau eba ebb ebc ebe ebk ebl ebr ebt ebu ec- eca ecb ecc ece eck ecl ecr ect ecu eea eeb eec eee eek eel eer eet eka ekb ekc eke ekl ekr ekt eku ela elb elc ele elk ell elr elt elu era erb erc ere erk erl err ert eru eta etb etc ete etk etl etr ett etu eu- eua eub euc eue eul eur eut k-t ka- kaa kab kac kae kak kal kar kat kau kba kbb kbc kbe kbk kbl kbr kbu kca kcb kcc kce kck kcl kcr kct kcu ke- kea keb kec kee kek kel ker ket kkb kkc kke kkk kkl kkr kkt kku kl- kla klb klc klr klt klu kra krc krk krl krr krt kru kta ktb ktc kte ktk ktl ktr ktt ktu kub kuc kue kuk kul kur kut kuu la- laa lab lac lae lak lal lar lat lau lba lbb lbc lbe lbk lbl lbr lbt lbu lca lcb lcc lce lck lcl lcr lct lcu lea leb lec lee lek lel ler let leu lka lkb lkl lkr lkt lla llb llc lle llk lll llr llt llu lra lrb lrc lrk lrr lrt lru lta ltb ltc lte ltk ltl ltr ltt ltu lua lub luc lue luk lul lur lut luu ra- raa rab rac rae rak ral rar rat rau rba rbb rbc rbe rbk rbl rbr rbt rbu rca rcb rcc rce rcl rcr rct rcu re- rea reb rec ree rek rel rer ret reu rkb rkc rke rkk rkt rku rla rlc rle rll rlr rlt rlu rra rrb rrc rrk rrl rrr rrt rru rta rtb rtc rte rtk rtl rtr rtt rtu rua rub ruc rue ruk rur rut ruu taa tab tac tae tak tal tar tat tau tba tbb tbc tbe tbk tbl tbr tbt tbu tca tcb tcc tce tck tcl tcr tct tcu te- tea teb tec tee tek tel ter tet teu tka tkb tkc tke tkk tkl tkr tkt tla tlc tle tlk tll tlr tlt tlu tra trb trc tre trk trl trr trt tru tta ttb ttc tte ttk ttl ttr ttt ttu tua tub tuc tue tuk tul tur tut tuu ua- uaa uab uac uae uak ual uar uat uau uba ubb ubc ube ubk ubl ubr ubt ubu uca ucb ucc uce uck ucl ucr uct ucu uea ueb uec uee uel uer uet uka ukb ukc uke ukk ukl ukr uku ula ulb ulc ule ulk ull ulr ult ulu ur- ura urb urc ure urk url urr urt uru uta utb utc ute utk utl utr utt utu uua uuc uue uur uut uuu