-al -er a-a a-b a-c a-t aaa aab aac aad aae aaf aak aal aar aat aau ab- aba abb abc abd abe abf abk abl abr abt abu ac- aca acb acc acd ace acf ack acl acr act acu ad- ada adb adc add ade adf adk adl adr adt adu aea aeb aec aed aee aef aek ael aer aet aeu af- afa afb afc afd afe aff afk afl afr aft afu aka akb akc akd ake akk akl akr aku al- ala alb alc ald ale alf alk all alr alt alu ar- ara arb arc ard are arf ark arl arr art aru at- ata atb atc atd ate atf atl atr att atu au- aua aub auc aud aue auf auk aul aur aut b-u baa bab bac bad bae baf bak bal bar bat bau bba bbb bbc bbd bbe bbf bbk bbl bbr bbt bbu bca bcb bcc bcd bce bcf bck bcl bcr bct bcu bda bdb bdc bdd bde bdf bdk bdl bdr bdt bdu be- bea beb bec bed bee bef bek bel ber bet beu bfa bfb bfc bfd bfe bff bfl bfr bft bfu bka bkb bkc bke bkf bkk bkl bkr bkt bla blb blc bld ble blf blk bll blr blt blu bra brb brd bre brf brk brl brr brt bru bta btb btc btd bte btf btk btl btr btt btu bua bub buc bud bue buf buk bul bur but buu c-- caa cab cac cad cae caf cak cal car cat cau cba cbb cbc cbd cbe cbf cbk cbl cbr cbt cbu cca ccb ccc ccd cce ccf cck ccl ccr cct ccu cda cdb cdc cdd cde cdf cdk cdl cdr cdt cdu ce- cea ceb cec ced cee cef cek cel cer cet ceu cfa cfb cfc cfd cfe cff cfk cfl cfr cft cfu cka ckb ckc ckd ckt cl- cla clb clc cld cle clf clk cll clr clt clu cra crb crc crd cre crf crk crl crr crt cru cta ctb ctc ctd cte ctf ctk ctl ctr ctt ctu cua cub cuc cud cue cuf cuk cul cur cut cuu daa dab dac dad dae daf dak dal dar dat dau dba dbb dbc dbd dbe dbf dbk dbl dbr dbt dbu dca dcb dcc dcd dce dcf dck dcl dcr dct dcu dda ddb ddc ddd dde ddf ddk ddl ddr ddt ddu de- dea deb dec ded dee def dek del der det deu dfa dfb dfc dfd dfe dff dfk dfl dfr dft dfu dka dkb dkc dke dkk dkl dkr dkt dku dl- dla dlb dlc dld dle dlf dlk dll dlr dlt dlu dra drb drc drd dre drk drl drr drt dru dta dtb dtc dtd dte dtf dtk dtl dtr dtt dtu dua dub duc dud due duf duk dul dur dut eaa eab eac ead eae eaf eak eal ear eat eau eba ebb ebc ebd ebe ebf ebk ebl ebr ebt ebu ec- eca ecb ecc ecd ece ecf eck ecl ecr ect ecu ed- eda edb edc edd ede edf edk edl edr edt edu eea eeb eec eed eee eef eek eel eer eet ef- efa efb efc efd efe eff efl efr eft eka ekb ekc ekd eke ekf ekl ekr ekt eku ela elb elc eld ele elf elk ell elr elt elu era erb erc erd ere erf erk erl err ert eru eta etb etc etd ete etf etk etl etr ett etu eu- eua eub euc eud eue euf eul eur eut faa fab fac fad fae faf fak fal far fat fau fba fbb fbc fbd fbe fbf fbk fbl fbr fbt fbu fca fcb fcc fcd fce fcf fck fcl fcr fct fcu fda fdb fdc fdd fde fdf fdk fdl fdr fdt fdu fea feb fec fed fee fef fek fel fer fet feu ffa ffc ffd ffe fff ffk ffl ffr fft ffu fka fkb fkc fkf fkk fkl fkt fla flb flc fld fle flf fll flr flt flu fra frb frc frd fre frf frk frl frr frt fru fta ftb ftc ftd fte ftf ftk ftl ftr ftt ftu fua fub fud fue fuf fuk ful fur fut fuu k-t ka- kaa kab kac kad kae kaf kak kal kar kat kau kba kbb kbc kbd kbe kbf kbk kbl kbr kbu kca kcb kcc kcd kce kck kcl kcr kct kcu kda kdb kdc kde kdf kdk kdl kdr kdt kdu ke- kea keb kec ked kee kef kek kel ker ket kfa kfc kfd kff kfu kkb kkc kke kkk kkl kkr kkt kku kl- kla klb klc kld klf klr klt klu kra krc krd krf krk krl krr krt kru kta ktb ktc kte ktf ktk ktl ktr ktt ktu kub kuc kud kue kuk kul kur kut kuu la- laa lab lac lad lae laf lak lal lar lat lau lba lbb lbc lbd lbe lbf lbk lbl lbr lbt lbu lca lcb lcc lcd lce lcf lck lcl lcr lct lcu lda ldb ldc ldd lde ldf ldk ldl ldr ldt ldu lea leb lec led lee lef lek lel ler let leu lfa lfb lfc lfd lfe lff lfk lfl lfr lft lfu lka lkb lkl lkr lkt lla llb llc lld lle llf llk lll llr llt llu lra lrb lrc lrd lrf lrk lrr lrt lru lta ltb ltc ltd lte ltf ltk ltl ltr ltt ltu lua lub luc lud lue luf luk lul lur lut luu ra- raa rab rac rad rae raf rak ral rar rat rau rba rbb rbc rbd rbe rbf rbk rbl rbr rbt rbu rca rcb rcc rcd rce rcf rcl rcr rct rcu rda rdb rdc rdd rde rdf rdl rdr rdt rdu re- rea reb rec red ree ref rek rel rer ret reu rfa rfb rfc rfd rfe rff rfk