-al a-a a-b a-c aaa aab aac aae aag aal aas aau ab- aba abb abc abe abg abl abs abu ac- aca acb acc ace acg acl acs acu aea aeb aec aee aeg ael aes aeu ag- aga agb agc age agg agl ags agu al- ala alb alc ale alg all als alu as- asa asb asc ase asg asl ass asu au- aua aub auc aue aug aul aus b-u baa bab bac bae bag bal bas bau bba bbb bbc bbe bbg bbl bbs bbu bca bcb bcc bce bcg bcl bcs bcu be- bea beb bec bee beg bel bes beu bga bgb bgc bge bgg bgl bgs bgu bla blb blc ble blg bll bls blu bsa bsb bsc bse bsg bsl bss bsu bua bub buc bue bug bul bus buu c-- caa cab cac cae cag cal cas cau cba cbb cbc cbe cbg cbl cbs cbu cca ccb ccc cce ccg ccl ccs ccu ce- cea ceb cec cee ceg cel ces ceu cga cgb cgc cge cgg cgl cgs cgu cl- cla clb clc cle clg cll cls clu csa csb csc cse csg csl css csu cua cub cuc cue cug cul cus cuu eaa eab eac eae eag eal eas eau eba ebb ebc ebe ebg ebl ebs ebu ec- eca ecb ecc ece ecg ecl ecs ecu eea eeb eec eee eeg eel ees ega egb egc ege egg egl egs egu ela elb elc ele elg ell els elu es- esa esb esc ese esg esl ess esu eu- eua eub euc eue eug eul eus gaa gab gac gae gag gal gas gau gba gbc gbe gbg gbl gbs gbu gca gcb gcc gce gcg gcl gcs gcu ge- gea geb gec gee geg gel ges geu gga ggb ggc ggg ggs ggu gla glb glc gle glg gll gls glu gsa gsb gsc gse gsg gsl gss gsu gu- gua gub guc gue gug gul gus guu la- laa lab lac lae lag lal las lau lba lbb lbc lbe lbg lbl lbs lbu lca lcb lcc lce lcg lcl lcs lcu lea leb lec lee leg lel les leu lga lgb lgc lge lgg lgl lgs lgu lla llb llc lle llg lll lls llu lsa lsb lsc lse lsg lsl lss lsu lua lub luc lue lug lul lus luu saa sab sac sae sag sal sas sau sba sbb sbc sbe sbg sbl sbs sbu sca scb scc sce scg scl scs scu se- sea seb sec see seg sel ses seu sga sgb sgc sge sgg sgl sgs sgu sla slb slc sle slg sll sls slu ss- ssa ssb ssc sse ssg ssl sss ssu sua sub suc sue sug sul sus suu ua- uaa uab uac uae uag ual uas uau uba ubb ubc ube ubg ubl ubs ubu uca ucb ucc uce ucg ucl ucs ucu uea ueb uec uee ueg uel ues uga ugb ugc uge ugg ugl ugs ugu ula ulb ulc ule ulg ull uls ulu usa usb usc use usg usl uss usu uua uuc uue uug uus uuu