-al -er a-a a-c aaa aac aae aag aak aal aar aau ac- aca acc ace acg ack acl acr acu aea aec aee aeg aek ael aer aeu ag- aga agc age agg agk agl agr agu aka akc ake akg akk akl akr aku al- ala alc ale alg alk all alr alu ar- ara arc are arg ark arl arr aru au- aua auc aue aug auk aul aur c-- caa cac cae cag cak cal car cau cca ccc cce ccg cck ccl ccr ccu ce- cea cec cee ceg cek cel cer ceu cga cgc cge cgg cgl cgr cgu cka ckc cl- cla clc cle clg clk cll clr clu cra crc cre crg crk crl crr cru cua cuc cue cug cuk cul cur cuu eaa eac eae eag eak eal ear eau ec- eca ecc ece ecg eck ecl ecr ecu eea eec eee eeg eek eel eer ega egc ege egg egl egr egu eka ekc eke ekg ekl ekr eku ela elc ele elg elk ell elr elu era erc ere erg erk erl err eru eu- eua euc eue eug eul eur gaa gac gae gag gak gal gar gau gca gcc gce gcg gck gcl gcr gcu ge- gea gec gee geg gek gel ger geu gga ggc ggg ggr ggu gka gla glc gle glg glk gll glr glu gra grc gre grg grk grl grr gru gu- gua guc gue gug guk gul gur guu ka- kaa kac kae kag kak kal kar kau kca kcc kce kcg kck kcl kcr kcu ke- kea kec kee keg kek kel ker kga kgc kgl kgu kkc kke kkk kkl kkr kku kl- kla klc klg klr klu kra krc krg krk krl krr kru kuc kue kug kuk kul kur kuu la- laa lac lae lag lak lal lar lau lca lcc lce lcg lck lcl lcr lcu lea lec lee leg lek lel ler leu lga lgc lge lgg lgk lgl lgr lgu lka lkg lkl lkr lla llc lle llg llk lll llr llu lra lrc lrg lrk lrr lru lua luc lue lug luk lul lur luu ra- raa rac rae rag rak ral rar rau rca rcc rce rcg rcl rcr rcu re- rea rec ree reg rek rel rer reu rga rgc rge rgg rgk rgr rkc rke rkg rkk rku rla rlc rle rlg rll rlr rlu rra rrc rrg rrk rrl rrr rru rua ruc rue rug ruk rur ruu ua- uaa uac uae uag uak ual uar uau uca ucc uce ucg uck ucl ucr ucu uea uec uee ueg uel uer uga ugc uge ugg ugk ugl ugr ugu uka ukc uke ukk ukl ukr uku ula ulc ule ulg ulk ull ulr ulu ur- ura urc ure urg urk url urr uru uua uuc uue uug uur uuu