-al -er -up a-a a-b a-c aaa aab aac aad aae aak aal aap aar aau ab- aba abb abc abd abe abk abl abp abr abu ac- aca acb acc acd ace ack acl acp acr acu ad- ada adb adc add ade adk adl adp adr adu aea aeb aec aed aee aek ael aep aer aeu aka akb akc akd ake akk akl akp akr aku al- ala alb alc ald ale alk all alp alr alu ap- apa apb apc apd ape apk apl app apr apu ar- ara arb arc ard are ark arl arp arr aru au- aua aub auc aud aue auk aul aup aur b-p b-u baa bab bac bad bae bak bal bap bar bau bba bbb bbc bbd bbe bbk bbl bbp bbr bbu bca bcb bcc bcd bce bck bcl bcp bcr bcu bda bdb bdc bdd bde bdk bdl bdp bdr bdu be- bea beb bec bed bee bek bel bep ber beu bka bkb bkc bke bkk bkl bkp bkr bla blb blc bld ble blk bll blp blr blu bpa bpb bpc bpd bpe bpl bpp bpr bpu bra brb brd bre brk brl brp brr bru bua bub buc bud bue buk bul bup bur buu c-- caa cab cac cad cae cak cal cap car cau cba cbb cbc cbd cbe cbk cbl cbp cbr cbu cca ccb ccc ccd cce cck ccl ccp ccr ccu cda cdb cdc cdd cde cdk cdl cdp cdr cdu ce- cea ceb cec ced cee cek cel cep cer ceu cka ckb ckc ckd cl- cla clb clc cld cle clk cll clp clr clu cpa cpb cpc cpd cpe cpk cpl cpp cpr cpu cra crb crc crd cre crk crl crp crr cru cua cub cuc cud cue cuk cul cup cur cuu daa dab dac dad dae dak dal dap dar dau dba dbb dbc dbd dbe dbk dbl dbp dbr dbu dca dcb dcc dcd dce dck dcl dcp dcr dcu dda ddb ddc ddd dde ddk ddl ddp ddr ddu de- dea deb dec ded dee dek del dep der deu dka dkb dkc dke dkk dkl dkp dkr dku dl- dla dlb dlc dld dle dlk dll dlp dlr dlu dpa dpb dpc dpd dpe dpk dpl dpp dpr dpu dra drb drc drd dre drk drl drp drr dru dua dub duc dud due duk dul dup dur eaa eab eac ead eae eak eal eap ear eau eba ebb ebc ebd ebe ebk ebl ebp ebr ebu ec- eca ecb ecc ecd ece eck ecl ecr ecu ed- eda edb edc edd ede edk edl edp edr edu eea eeb eec eed eee eek eel eep eer eka ekb ekc ekd eke ekl ekp ekr eku ela elb elc eld ele elk ell elp elr elu ep- epa epb epc epd epe epl epp epr epu era erb erc erd ere erk erl erp err eru eu- eua eub euc eud eue eul eup eur ka- kaa kab kac kad kae kak kal kap kar kau kba kbb kbc kbd kbe kbk kbl kbp kbr kbu kca kcb kcc kcd kce kck kcl kcp kcr kcu kda kdb kdc kde kdk kdl kdp kdr kdu ke- kea keb kec ked kee kek kel kep ker kkb kkc kke kkk kkl kkp kkr kku kl- kla klb klc kld klr klu kpa kpc kpd kpe kpk kpl kpp kpr kpu kra krc krd krk krl krp krr kru kub kuc kud kue kuk kul kup kur kuu l-p la- laa lab lac lad lae lak lal lap lar lau lba lbb lbc lbd lbe lbk lbl lbp lbr lbu lca lcb lcc lcd lce lck lcl lcp lcr lcu lda ldb ldc ldd lde ldk ldl ldp ldr ldu lea leb lec led lee lek lel lep ler leu lka lkb lkl lkp lkr lla llb llc lld lle llk lll llp llr llu lpa lpb lpc lpd lpe lpk lpl lpp lpr lpu lra lrb lrc lrd lrk lrp lrr lru lua lub luc lud lue luk lul lup lur luu p-p paa pab pac pad pae pak pal pap par pau pba pbb pbc pbd pbe pbk pbl pbp pbr pbu pca pcb pcc pcd pce pck pcl pcp pcr pcu pda pdb pdc pdd pde pdk pdl pdp pdr pdu pea peb pec ped pee pek pel pep per peu pka pkb pkc pkd pke pkl pkp pkr pku pla plb plc pld ple plk pll plp plr plu ppa ppb ppc ppd ppe ppk ppl ppp ppr ppu pra prb prc prd pre prk prl prp prr pru pua pub puc pud pue puk pul pup pur puu ra- raa rab rac rad rae rak ral rap rar rau rba rbb rbc rbd rbe rbk rbl rbp rbr rbu rca rcb rcc rcd rce rcl rcp rcr rcu rda rdb rdc rdd rde rdl rdp rdr rdu re- rea reb rec red ree rek rel rep rer reu rkb rkc rke rkk rkp rku rla rlc rld rle rll rlp rlr rlu rpa rpb rpc rpd rpe rpk rpl rpp rpr rpu rra rrb rrc rrd rrk rrl rrp rrr rru rua rub ruc rud rue ruk rup rur ruu ua- uaa uab uac uad uae uak ual uap uar uau uba ubb ubc ube ubk ubl ubp ubr ubu uca ucb ucc ucd uce uck ucl ucp ucr ucu uda udb udc udd ude udk udl udp udr udu uea ueb uec ued uee uel uep uer uka ukb ukc uke ukk ukl ukp ukr uku ula ulb ulc uld ule ulk ull ulp ulr ulu up- upa upb upc upd upe upk upp upr upu ur- ura urb urc urd ure urk url urp urr uru uua uuc uue uur uuu

a-ak a-be aaaa aaab aaac aaad aaae aaal aaap aaar aaba aabb aabc aabd aabl aabp aaca aacb aacc aacd aace aack aacl